Bump json from 2.7.5 to 2.7.6

Bumps [json](https://github.com/ruby/json) from 2.7.5 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@v2.7.5...v2.7.6)

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

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

Gemfile.lock

@@ -27,7 +27,7 @@ GEM
       domain_name (~> 0.5)
     iso-639 (0.3.8)
       csv
-    json (2.7.5)
+    json (2.7.6)
     kgio (2.11.4)
     logger (1.6.1)
     mail (2.8.1)