Merge pull request #18 from zauberware/dependabot/bundler/json-2.3.1

Bump json from 2.2.0 to 2.3.1

Author: simonfranzen

Gemfile.lock

@@ -113,7 +113,7 @@ GEM
       graphql (>= 1.6.0, < 2)
     i18n (1.8.5)
       concurrent-ruby (~> 1.0)
-    json (2.2.0)
+    json (2.3.1)
     jwt (2.2.1)
     listen (3.1.5)
       rb-fsevent (~> 0.9, >= 0.9.4)