Update pytest-mock requirement from ==3.12.* to ==3.14.* (#4009)

Updates the requirements on [pytest-mock](https://github.com/pytest-dev/pytest-mock) to permit the latest version.
- [Release notes](https://github.com/pytest-dev/pytest-mock/releases)
- [Changelog](https://github.com/pytest-dev/pytest-mock/blob/main/CHANGELOG.rst)
- [Commits](https://github.com/pytest-dev/pytest-mock/compare/v3.12.0...v3.14.0)

---
updated-dependencies:
- dependency-name: pytest-mock
  dependency-type: direct:production
...

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pyproject.toml

@@ -122,7 +122,7 @@ dev = [
   "pytest-cache",
   "pytest-cov",
   "pytest-django==4.*",
-  "pytest-mock==3.12.*",
+  "pytest-mock==3.14.*",
   "pytest-rerunfailures==14.*",
   "pytest-sugar",
   "pytest-xdist==3.5.*",