build(deps-dev): update mock requirement in /plc4py

Updates the requirements on [mock](https://github.com/testing-cabal/mock) to permit the latest version.
- [Changelog](https://github.com/testing-cabal/mock/blob/master/CHANGELOG.rst)
- [Commits](testing-cabal/mock@4.0.2...5.2.0)

---
updated-dependencies:
- dependency-name: mock
  dependency-version: 5.2.0
  dependency-type: direct:development
...

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

Author: dependabot[bot]

plc4py/pyproject.toml

@@ -68,7 +68,7 @@ dev = [
         "requires",
         "pre-commit>=2.6.0",
         "pytest-mock>=3.8.1",
-        "mock>=4.0.2",
+        "mock>=5.2.0",
         "mypy>=0.942",
         "flake8>=4.0.1",
         "pytest-asyncio",