chore(deps): bump json from 2.21.1 to 2.21.2

Bumps [json](https://github.com/ruby/json) from 2.21.1 to 2.21.2.
- [Release notes](https://github.com/ruby/json/releases)
- [Changelog](https://github.com/ruby/json/blob/master/CHANGES.md)
- [Commits](ruby/json@v2.21.1...v2.21.2)

---
updated-dependencies:
- dependency-name: json
  dependency-version: 2.21.2
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Gemfile.lock

@@ -280,7 +280,7 @@ GEM
     jquery-turbolinks (2.1.0)
       railties (>= 3.1.0)
       turbolinks
-    json (2.21.1)
+    json (2.21.2)
     json-canonicalization (1.0.0)
     json-jwt (1.16.6)
       activesupport (>= 4.2)