chore(deps-dev): bump jekyll-optional-front-matter in /docs (#9404)

Bumps [jekyll-optional-front-matter](https://github.com/benbalter/jekyll-optional-front-matter) from 0.3.2 to 0.3.3.
- [Release notes](https://github.com/benbalter/jekyll-optional-front-matter/releases)
- [Changelog](https://github.com/benbalter/jekyll-optional-front-matter/blob/main/CHANGELOG.md)
- [Commits](https://github.com/benbalter/jekyll-optional-front-matter/compare/v0.3.2...v0.3.3)

---
updated-dependencies:
- dependency-name: jekyll-optional-front-matter
  dependency-version: 0.3.3
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

docs/Gemfile.lock

@@ -98,7 +98,7 @@ GEM
       jekyll (>= 3.4, < 5.0)
       octokit (>= 4, < 7, != 4.4.0)
     jekyll-i18n_tags (1.0.0)
-    jekyll-optional-front-matter (0.3.2)
+    jekyll-optional-front-matter (0.3.3)
       jekyll (>= 3.0, < 5.0)
     jekyll-readme-index (0.3.0)
       jekyll (>= 3.0, < 5.0)