Update Gemfile.lock

Author: ajkopinga

docs/Gemfile.lock

@@ -56,7 +56,7 @@ GEM
     mercenary (0.3.6)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (7.0.5)
+    public_suffix (6.0.2)
     rake (13.3.1)
     rb-fsevent (0.11.2)
     rb-inotify (0.11.1)