chore(deps): update pytest-mock requirement from >=3.6.1 to >=3.15.1 (#959)

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](pytest-dev/pytest-mock@v3.6.1...v3.15.1)

---
updated-dependencies:
- dependency-name: pytest-mock
  dependency-version: 3.15.1
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Lahiru Maramba <llahiru@gmail.com>

Author: dependabot[bot]

requirements.txt

@@ -4,7 +4,7 @@ pytest >= 8.4.2
 pytest-cov >= 2.4.0
 pytest-localserver >= 0.10.0
 pytest-asyncio >= 0.26.0
-pytest-mock >= 3.6.1
+pytest-mock >= 3.15.1
 respx == 0.23.1
 
 cachecontrol >= 0.14.3