Bump mkdocs-minify-plugin from 0.5.0 to 0.6.1 in /CI (#1194)

Bumps [mkdocs-minify-plugin](https://github.com/byrnereese/mkdocs-minify-plugin) from 0.5.0 to 0.6.1.
- [Release notes](https://github.com/byrnereese/mkdocs-minify-plugin/releases)
- [Commits](https://github.com/byrnereese/mkdocs-minify-plugin/compare/0.5.0...0.6.1)

---
updated-dependencies:
- dependency-name: mkdocs-minify-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

CI/requirements.txt

@@ -4,5 +4,5 @@ mkdocs-markdownextradata-plugin==0.2.5
 mkdocs-exclude==1.0.2
 mkdocs-redirects==1.2.0
 mkdocs-git-revision-date-localized-plugin==1.1.0
-mkdocs-minify-plugin==0.5.0
+mkdocs-minify-plugin==0.6.1
 plantuml-markdown==3.7.3