Merge pull request #340 from jhmartin/dependabot/bundler/json-2.12.0

Bump json from 2.11.3 to 2.12.0

Author: jhmartin

Gemfile.lock

@@ -21,7 +21,7 @@ GEM
       concurrent-ruby
     concurrent-ruby (1.2.2)
     jmespath (1.6.2)
-    json (2.11.3)
+    json (2.12.0)
     kramdown (2.4.0)
       rexml
     kramdown-parser-gfm (1.1.0)