chore(deps-dev): update pytest-mock requirement from >=3.12 to >=3.15.1 (#2454)

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...v3.15.1)

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

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pyproject.toml

@@ -28,7 +28,7 @@ dev = [
     "pytest>=9.1.1",
     "pytest-asyncio>=0.23",
     "pytest-cov>=7.1.0",
-    "pytest-mock>=3.12",
+    "pytest-mock>=3.15.1",
     "ruff>=0.4",
     "mypy>=2.1.0",
     "pyyaml>=6.0",