Merge pull request #3828 from github/tomthorogood/test-helper-minitest

Fix test_helper.rb

Author: tomthorogood

test/test_helper.rb

@@ -268,7 +268,7 @@ def add_message(type, file, line_number, message)
   client.messages << "::#{type} file=#{file},line=#{line_number}::#{message}"
 end
 
-MiniTest.after_run do
+Minitest.after_run do
   warn "Repo checks were rate limited during this CI run" if NewOctokit.repos_skipped?
   warn "User checks were rate limited during this CI run" if NewOctokit.users_skipped?
   warn "Repo api was called #{NewOctokit.repo_request_count} times!"