DEV: update rubocop to version 0.77

We like to stay as close as possible to latest with rubocop cause the cops
get better.

This update required some code changes, specifically the default is to avoid
explicit returns where implicit is done

Also this renames a few rules

script/import_scripts/base.rb

@@ -222,7 +222,7 @@ class ImportScripts::Base
 
     if existing == import_ids.length
       puts "Skipping #{import_ids.length} already imported #{type}"
-      return true
+      true
     end
   ensure
     connection.exec('DROP TABLE import_ids') unless connection.nil?