Bump jekyll from 4.3.0 to 4.3.4 (#398)

Bumps [jekyll](https://github.com/jekyll/jekyll) from 4.3.0 to 4.3.4.
- [Release notes](https://github.com/jekyll/jekyll/releases)
- [Changelog](https://github.com/jekyll/jekyll/blob/master/History.markdown)
- [Commits](jekyll/jekyll@v4.3.0...v4.3.4)

---
updated-dependencies:
- dependency-name: jekyll
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Gemfile.lock

@@ -78,7 +78,7 @@ GEM
     http_parser.rb (0.8.0)
     i18n (1.14.6)
       concurrent-ruby (~> 1.0)
-    jekyll (4.3.0)
+    jekyll (4.3.4)
       addressable (~> 2.4)
       colorator (~> 1.0)
       em-websocket (~> 0.5)
@@ -187,7 +187,7 @@ GEM
       mime-types (>= 1.16, < 4.0)
       netrc (~> 0.8)
     rexml (3.3.9)
-    rouge (4.4.0)
+    rouge (4.5.0)
     rspec (3.12.0)
       rspec-core (~> 3.12.0)
       rspec-expectations (~> 3.12.0)