Bump json from 2.10.2 to 2.12.0

Bumps [json](https://github.com/ruby/json) from 2.10.2 to 2.12.0.
- [Release notes](https://github.com/ruby/json/releases)
- [Changelog](https://github.com/ruby/json/blob/master/CHANGES.md)
- [Commits](ruby/json@v2.10.2...v2.12.0)

---
updated-dependencies:
- dependency-name: json
  dependency-version: 2.12.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -87,7 +87,7 @@ GEM
       pp (>= 0.6.0)
       rdoc (>= 4.0.0)
       reline (>= 0.4.2)
-    json (2.10.2)
+    json (2.12.0)
     language_server-protocol (3.17.0.4)
     lint_roller (1.1.0)
     logger (1.7.0)