Bump pytest-mock from 3.8.2 to 3.9.0

Bumps [pytest-mock](https://github.com/pytest-dev/pytest-mock) from 3.8.2 to 3.9.0.
- [Release notes](https://github.com/pytest-dev/pytest-mock/releases)
- [Changelog](https://github.com/pytest-dev/pytest-mock/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest-mock@v3.8.2...v3.9.0)

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

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