Bump pytest from 8.0.0 to 8.1.1

Bumps [pytest](https://github.com/pytest-dev/pytest) from 8.0.0 to 8.1.1.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@8.0.0...8.1.1)

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

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

tests/requirements.txt

@@ -1,2 +1,2 @@
 py==1.11.0
-pytest==8.0.0
+pytest==8.1.1