Bump json from 2.7.4 to 2.7.6

Bumps [json](https://github.com/ruby/json) from 2.7.4 to 2.7.6.
- [Release notes](https://github.com/ruby/json/releases)
- [Changelog](https://github.com/ruby/json/blob/master/CHANGES.md)
- [Commits](ruby/json@v2.7.4...v2.7.6)

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

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile.lock

@@ -18,7 +18,7 @@ GEM
     diff-lcs (1.5.1)
     docile (1.4.1)
     hashdiff (1.1.1)
-    json (2.7.4)
+    json (2.7.6)
     language_server-protocol (3.17.0.3)
     lint_roller (1.1.0)
     net_http_timeout_errors (1.1.0)