Merge pull request #247 from tobexyz/dependabot/bundler/docs/json-2.21.2

chore(deps-dev): bump json from 2.20.0 to 2.21.2 in /docs

Author: tobexyz

docs/Gemfile.lock

@@ -210,7 +210,7 @@ GEM
       gemoji (>= 3, < 5)
       html-pipeline (~> 2.2)
       jekyll (>= 3.0, < 5.0)
-    json (2.20.0)
+    json (2.21.2)
     kramdown (2.4.0)
       rexml
     kramdown-parser-gfm (1.1.0)