bundle(deps-dev): bump json from 2.7.2 to 2.7.4 (#546)

Bumps [json](https://github.com/ruby/json) from 2.7.2 to 2.7.4.
- [Release notes](https://github.com/ruby/json/releases)
- [Changelog](https://github.com/ruby/json/blob/master/CHANGES.md)
- [Commits](ruby/json@v2.7.2...v2.7.4)

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

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

Author: dependabot[bot]

Gemfile.lock

@@ -221,7 +221,7 @@ GEM
       gemoji (>= 3, < 5)
       html-pipeline (~> 2.2)
       jekyll (>= 3.0, < 5.0)
-    json (2.7.2)
+    json (2.7.4)
     kramdown (2.4.0)
       rexml
     kramdown-parser-gfm (1.1.0)