Bump gcloud from 0.8.9 to 0.8.10 in /app_dart (#2971)

Bumps [gcloud](https://github.com/dart-lang/gcloud) from 0.8.9 to 0.8.10.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/dart-lang/gcloud/releases">gcloud's releases</a>.</em></p>
<blockquote>
<h2>package:gcloud v0.8.10</h2>
<ul>
<li>Widen the SDK constraint to support Dart 3.0</li>
<li>Support retrying Datastore operations.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/dart-lang/gcloud/blob/master/CHANGELOG.md">gcloud's changelog</a>.</em></p>
<blockquote>
<h2>0.8.10</h2>
<ul>
<li>Widen the SDK constraint to support Dart 3.0</li>
<li>Support retrying Datastore operations.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/dart-lang/gcloud/commit/12e82a1ad3ce22160b6799dcb1675a7311b85efb"><code>12e82a1</code></a> Support retrying Datastore operations. (<a href="https://redirect.github.com/dart-lang/gcloud/issues/168">#168</a>)</li>
<li><a href="https://github.com/dart-lang/gcloud/commit/9261ef74899cc370c300a1e176d7f4636440fbc9"><code>9261ef7</code></a> Bump actions/checkout from 3.5.2 to 3.5.3 (<a href="https://redirect.github.com/dart-lang/gcloud/issues/167">#167</a>)</li>
<li><a href="https://github.com/dart-lang/gcloud/commit/d502a6e4ddcc506ae588adc64a52bbe170f6a4ef"><code>d502a6e</code></a> widen the sdk constraint (<a href="https://redirect.github.com/dart-lang/gcloud/issues/166">#166</a>)</li>
<li>See full diff in <a href="https://github.com/dart-lang/gcloud/compare/v0.8.9...v0.8.10">compare view</a></li>
</ul>
</details>
<br />

[![Dependabot compatibility score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=gcloud&package-manager=pub&previous-version=0.8.9&new-version=0.8.10)](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`.

---

<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>

app_dart/pubspec.yaml

@@ -19,7 +19,7 @@ dependencies:
   dbcrypt: 2.0.0
   file: 6.1.4
   fixnum: 1.1.0
-  gcloud: 0.8.9
+  gcloud: 0.8.10
   github: 9.17.0
   googleapis: 11.3.0
   googleapis_auth: 1.4.1