build(deps-dev): update pytest-mock requirement

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/v3.10.0...v3.15.1)

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

Signed-off-by: dependabot[bot] <support@github.com>

pyproject.toml

@@ -14,7 +14,7 @@ dev = [
     # Testing framework
     "pytest>=7.0.0",
     "pytest-cov>=4.0.0",
-    "pytest-mock>=3.10.0",
+    "pytest-mock>=3.15.1",
     # Code quality
     "black>=23.0.0",
     "flake8>=6.0.0",