Bump dict2css from 0.3.0 to 0.3.0.post1

Bumps [dict2css](https://github.com/sphinx-toolbox/dict2css) from 0.3.0 to 0.3.0.post1.
- [Release notes](https://github.com/sphinx-toolbox/dict2css/releases)
- [Changelog](https://github.com/sphinx-toolbox/dict2css/blob/master/doc-source/changelog.rst)
- [Commits](sphinx-toolbox/dict2css@v0.3.0...v0.3.0.post1)

---
updated-dependencies:
- dependency-name: dict2css
  dependency-type: indirect
  update-type: version-update:semver-patch
...

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