Bump pip from 21.3.1 to 22.0.2 in /.github/workflows (#173)

Bumps [pip](https://github.com/pypa/pip) from 21.3.1 to 22.0.2.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/pypa/pip/blob/main/NEWS.rst">pip's changelog</a>.</em></p>
<blockquote>
<h1>22.0.2 (2022-01-30)</h1>
<h2>Deprecations and Removals</h2>
<ul>
<li>Instead of failing on index pages that use non-compliant HTML 5, print a deprecation warning and fall back to <code>html5lib</code>-based parsing for now. This simplifies the migration for non-compliant index pages, by letting such indexes function with a warning. (<code>[#10847](pypa/pip#10847) &lt;https://github.com/pypa/pip/issues/10847&gt;</code>_)</li>
</ul>
<h1>22.0.1 (2022-01-30)</h1>
<h2>Bug Fixes</h2>
<ul>
<li>Accept lowercase <code>&lt;!doctype html&gt;</code> on index pages. (<code>[#10844](pypa/pip#10844) &lt;https://github.com/pypa/pip/issues/10844&gt;</code>_)</li>
<li>Properly handle links parsed by html5lib, when using <code>--use-deprecated=html5lib</code>. (<code>[#10846](pypa/pip#10846) &lt;https://github.com/pypa/pip/issues/10846&gt;</code>_)</li>
</ul>
<h1>22.0 (2022-01-29)</h1>
<h2>Process</h2>
<ul>
<li>Completely replace :pypi:<code>tox</code> in our development workflow, with :pypi:<code>nox</code>.</li>
</ul>
<h2>Deprecations and Removals</h2>
<ul>
<li>
<p>Deprecate alternative progress bar styles, leaving only <code>on</code> and <code>off</code> as available choices. (<code>[#10462](pypa/pip#10462) &lt;https://github.com/pypa/pip/issues/10462&gt;</code>_)</p>
</li>
<li>
<p>Drop support for Python 3.6. (<code>[#10641](pypa/pip#10641) &lt;https://github.com/pypa/pip/issues/10641&gt;</code>_)</p>
</li>
<li>
<p>Disable location mismatch warnings on Python versions prior to 3.10.</p>
<p>These warnings were helping identify potential issues as part of the sysconfig -&gt; distutils transition, and we no longer need to rely on reports from older Python versions for information on the transition. (<code>[#10840](pypa/pip#10840) &lt;https://github.com/pypa/pip/issues/10840&gt;</code>_)</p>
</li>
</ul>
<h2>Features</h2>
<ul>
<li>
<p>Changed <code>PackageFinder</code> to parse HTML documents using the stdlib :class:<code>html.parser.HTMLParser</code> class instead of the <code>html5lib</code> package.</p>
<p>For now, the deprecated <code>html5lib</code> code remains and can be used with the <code>--use-deprecated=html5lib</code> command line option. However, it will be removed in a future pip release. (<code>[#10291](pypa/pip#10291) &lt;https://github.com/pypa/pip/issues/10291&gt;</code>_)</p>
</li>
<li>
<p>Utilise <code>rich</code> for presenting pip's default download progress bar. (<code>[#10462](pypa/pip#10462) &lt;https://github.com/pypa/pip/issues/10462&gt;</code>_)</p>
</li>
<li>
<p>Present a better error message when an invalid wheel file is encountered, providing more context where the invalid wheel file is. (<code>[#10535](pypa/pip#10535) &lt;https://github.com/pypa/pip/issues/10535&gt;</code>_)</p>
</li>
<li>
<p>Documents the <code>--require-virtualenv</code> flag for <code>pip install</code>. (<code>[#10588](pypa/pip#10588) &lt;https://github.com/pypa/pip/issues/10588&gt;</code>_)</p>
</li>
<li>
<p><code>pip install &lt;tab&gt;</code> autocompletes paths. (<code>[#10646](pypa/pip#10646) &lt;https://github.com/pypa/pip/issues/10646&gt;</code>_)</p>
</li>
<li>
<p>Allow Python distributors to opt-out from or opt-in to the <code>sysconfig</code> installation scheme backend by setting <code>sysconfig._PIP_USE_SYSCONFIG</code> to <code>True</code> or <code>False</code>. (<code>[#10647](pypa/pip#10647) &lt;https://github.com/pypa/pip/issues/10647&gt;</code>_)</p>
</li>
<li>
<p>Make it possible to deselect tests requiring cryptography package on systems where it cannot be installed. (<code>[#10686](pypa/pip#10686) &lt;https://github.com/pypa/pip/issues/10686&gt;</code>_)</p>
</li>
<li>
<p>Start using Rich for presenting error messages in a consistent format. (<code>[#10703](pypa/pip#10703) &lt;https://github.com/pypa/pip/issues/10703&gt;</code>_)</p>
</li>
<li>
<p>Improve presentation of errors from subprocesses. (<code>[#10705](pypa/pip#10705) &lt;https://github.com/pypa/pip/issues/10705&gt;</code>_)</p>
</li>
</ul>

</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/pypa/pip/commit/c721f03190ef888711e8e9efe6ca8345ec6464f3"><code>c721f03</code></a> Bump for release</li>
<li><a href="https://github.com/pypa/pip/commit/844b799c9cf68629cc3c45b75c6e3b7f41086d49"><code>844b799</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/pypa/pip/issues/10847">#10847</a> from pradyunsg/better-html5lib-fallback</li>
<li><a href="https://github.com/pypa/pip/commit/a78845ab3387adfe590e2a0ae044a6d3b20ada55"><code>a78845a</code></a> Pacify functional tests that don't start with <code>\&lt;!doctype html&gt;</code></li>
<li><a href="https://github.com/pypa/pip/commit/c3a42f0679d06bfdb3475801618273be5bbce1e8"><code>c3a42f0</code></a> 📰</li>
<li><a href="https://github.com/pypa/pip/commit/c01b0b2729ee096c73416059de825e2f2f01bed9"><code>c01b0b2</code></a> Gracefully fallback to html5lib for parsing non-compliant index pages</li>
<li><a href="https://github.com/pypa/pip/commit/cc35c930b2d7096babb267ddce9382c30c58c7e1"><code>cc35c93</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/pypa/pip/issues/10850">#10850</a> from pradyunsg/release/22.0.1</li>
<li><a href="https://github.com/pypa/pip/commit/1b6ef5d0b387d84b1909799d1e18d0b4431038c3"><code>1b6ef5d</code></a> Bump for development</li>
<li><a href="https://github.com/pypa/pip/commit/c73ac8d6bcf4f64041cafeccd2125cca052abed9"><code>c73ac8d</code></a> Bump for release</li>
<li><a href="https://github.com/pypa/pip/commit/9a9c1def6e3bba1f2a860874c8c73b5c55f7f43c"><code>9a9c1de</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/pypa/pip/issues/10846">#10846</a> from pradyunsg/fix-html5lib-fallback</li>
<li><a href="https://github.com/pypa/pip/commit/80609e8c20a8db26c97037f252b29307ab44b0e2"><code>80609e8</code></a> Properly yield results from <code>html5lib</code> parsing</li>
<li>Additional commits viewable in <a href="https://github.com/pypa/pip/compare/21.3.1...22.0.2">compare view</a></li>
</ul>
</details>
<br />


[![Dependabot compatibility score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=pip&package-manager=pip&previous-version=21.3.1&new-version=22.0.2)](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores)

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting `@dependabot rebase`.

[//]: # (dependabot-automerge-start)
[//]: # (dependabot-automerge-end)

---

<details>
<summary>Dependabot commands and options</summary>
<br />

You can trigger Dependabot actions by commenting on this PR:
- `@dependabot rebase` will rebase this PR
- `@dependabot recreate` will recreate this PR, overwriting any edits that have been made to it
- `@dependabot merge` will merge this PR after your CI passes on it
- `@dependabot squash and merge` will squash and merge this PR after your CI passes on it
- `@dependabot cancel merge` will cancel a previously requested merge and block automerging
- `@dependabot reopen` will reopen this PR if it is closed
- `@dependabot close` will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually
- `@dependabot ignore this major version` will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
- `@dependabot ignore this minor version` will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)
- `@dependabot ignore this dependency` will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)


</details>

.github/workflows/constraints.txt

@@ -1,4 +1,4 @@
-pip==21.3.1
+pip==22.0.2
 nox==2022.1.7
 nox-poetry==0.9.0
 poetry==1.1.12