Bump json from 2.19.4 to 2.19.9 (#52)

Bumps [json](https://github.com/ruby/json) from 2.19.4 to 2.19.9.
- [Release notes](https://github.com/ruby/json/releases)
- [Changelog](https://github.com/ruby/json/blob/master/CHANGES.md)
- [Commits](ruby/json@v2.19.4...v2.19.9)

---
updated-dependencies:
- dependency-name: json
  dependency-version: 2.19.9
  dependency-type: indirect
...

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

@@ -52,7 +52,7 @@ GEM
       jekyll (>= 3.8, < 5.0)
     jekyll-watch (2.2.1)
       listen (~> 3.0)
-    json (2.19.4)
+    json (2.19.9)
     just-the-docs (0.12.0)
       jekyll (>= 3.8.5)
       jekyll-include-cache