Bump nose2[coverage_plugin] from 0.11.0 to 0.12.0

Bumps [nose2[coverage_plugin]](https://github.com/nose-devs/nose2) from 0.11.0 to 0.12.0.
- [Release notes](https://github.com/nose-devs/nose2/releases)
- [Changelog](https://github.com/nose-devs/nose2/blob/main/docs/changelog.rst)
- [Commits](https://github.com/nose-devs/nose2/compare/0.11.0...0.12.0)

---
updated-dependencies:
- dependency-name: nose2[coverage_plugin]
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

requirements-dev.txt

@@ -1,5 +1,5 @@
 mock==4.0.3
-nose2[coverage_plugin]==0.11.0
+nose2[coverage_plugin]==0.12.0
 cov-core==1.15.0
 black==22.6.0
 pycodestyle==2.8.0