Bump json from 2.19.3 to 2.19.4 (#45)

Bumps [json](https://github.com/ruby/json) from 2.19.3 to 2.19.4.
- [Release notes](https://github.com/ruby/json/releases)
- [Changelog](https://github.com/ruby/json/blob/master/CHANGES.md)
- [Commits](ruby/json@v2.19.3...v2.19.4)

---
updated-dependencies:
- dependency-name: json
  dependency-version: 2.19.4
  dependency-type: indirect
  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>

Author: dependabot[bot]

Gemfile.lock

@@ -84,7 +84,7 @@ GEM
       sass-embedded (~> 1.75)
     jekyll-watch (2.2.1)
       listen (~> 3.0)
-    json (2.19.3)
+    json (2.19.4)
     kramdown (2.5.2)
       rexml (>= 3.4.4)
     kramdown-parser-gfm (1.1.0)