Bump json from 2.4.0 to 2.4.1

Bumps [json](https://github.com/flori/json) from 2.4.0 to 2.4.1.
- [Release notes](https://github.com/flori/json/releases)
- [Changelog](https://github.com/flori/json/blob/master/CHANGES.md)
- [Commits](flori/json@v2.4.0...v2.4.1)

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

Gemfile.lock

@@ -18,7 +18,7 @@ GEM
       thor (>= 0.19.4, < 2.0)
       tins (~> 1.6)
     docile (1.3.2)
-    json (2.4.0)
+    json (2.4.1)
     mini_portile2 (2.4.0)
     minitest (5.14.2)
     nokogiri (1.10.10)