Update pytest requirement from ^6.0 to ^7.4 (#63)

Updates the requirements on [pytest](https://github.com/pytest-dev/pytest) to permit the latest version.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@6.0.0...7.4.0)

---
updated-dependencies:
- dependency-name: pytest
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

pyproject.toml

@@ -15,7 +15,7 @@ python = "^3.9"
 # Add your project dependencies here
 
 [tool.poetry.dev-dependencies]
-pytest = "^6.0"
+pytest = "^7.4"
 
 [tool.pytest.ini_options]
 filterwarnings = ["ignore::DeprecationWarning:jsonspec.*"]