Bump nose2[coverage_plugin] from 0.10.0 to 0.12.0 (#3317)

Bumps [nose2[coverage_plugin]](https://github.com/nose-devs/nose2) from 0.10.0 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/0.10.0...0.12.0

)

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

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