Bump json from 2.10.1 to 2.10.2

Bumps [json](https://github.com/ruby/json) from 2.10.1 to 2.10.2.
- [Release notes](https://github.com/ruby/json/releases)
- [Changelog](https://github.com/ruby/json/blob/master/CHANGES.md)
- [Commits](https://github.com/ruby/json/compare/v2.10.1...v2.10.2)

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

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

Gemfile.lock

@@ -305,7 +305,7 @@ GEM
     irb (1.12.0)
       rdoc
       reline (>= 0.4.2)
-    json (2.10.1)
+    json (2.10.2)
     jwt (2.9.3)
       base64
     kaminari (1.2.2)