Bump mock from 4.0.3 to 5.0.0

Bumps [mock](https://github.com/testing-cabal/mock) from 4.0.3 to 5.0.0.
- [Release notes](https://github.com/testing-cabal/mock/releases)
- [Changelog](https://github.com/testing-cabal/mock/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/testing-cabal/mock/compare/4.0.3...5.0.0)

---
updated-dependencies:
- dependency-name: mock
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

requirements-dev.txt

@@ -1,4 +1,4 @@
-mock==4.0.3
+mock==5.0.0
 nose2[coverage_plugin]==0.12.0
 cov-core==1.15.0
 black==22.12.0