⬆️ Update pytest-mock requirement from ~=3.14.0 to ~=3.15.0

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@v3.14.0...v3.15.0)

---
updated-dependencies:
- dependency-name: pytest-mock
  dependency-version: 3.15.0
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

requirements.dev.txt

@@ -1,5 +1,5 @@
 anyio~=4.10.0
 autoflake~=2.3.1
 pytest~=8.4.1
-pytest-mock~=3.14.0
+pytest-mock~=3.15.0
 ruff~=0.12.10