chore(deps-dev): bump pytest-mock from 3.8.2 to 3.14.0 in /backend (#898

)

Bumps [pytest-mock](https://github.com/pytest-dev/pytest-mock) from 3.8.2 to 3.14.0.
- [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...v3.14.0)

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

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

backend/dev-requirements.txt

@@ -8,7 +8,7 @@ mypy-protobuf==3.5.0
 parameterized==0.9.0
 pep8-naming==0.13.3
 pytest-cov==5.0.0
-pytest-mock==3.8.2
+pytest-mock==3.14.0
 pytest-django==4.5.2
 pytest-xdist[psutil]==3.2.1
 pytest==7.2.0