Bump pytest from 7.3.0 to 8.1.0 in /backend/worker

Bumps [pytest](https://github.com/pytest-dev/pytest) from 7.3.0 to 8.1.0.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@7.3.0...8.1.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

backend/worker/requirements.txt

@@ -16,7 +16,7 @@ pip-tools==7.1.0
 pipreqs==0.4.11
 psycopg2-binary==2.9.5
 pyproject_hooks==1.0.0
-pytest==7.3.0
+pytest==8.1.0
 python-dateutil==2.8.2
 pytz==2023.3
 pytz-deprecation-shim==0.1.0.post0