Bump pytest from 7.2.2 to 7.3.1

Bumps [pytest](https://github.com/pytest-dev/pytest) from 7.2.2 to 7.3.1.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@7.2.2...7.3.1)

---
updated-dependencies:
- dependency-name: pytest
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

pyproject.toml

@@ -45,7 +45,7 @@ dev-pylint = [
   # For checking the noxfile and tests
   "frequenz-api-common[dev-noxfile,dev-pytest]",
 ]
-dev-pytest = ["pytest == 7.2.2"]
+dev-pytest = ["pytest == 7.3.1"]
 dev = [
   "frequenz-api-common[dev-docstrings,dev-formatting,dev-mypy,dev-noxfile,dev-pylint,dev-pytest]",
 ]