Merge branch...

Merge branch '216349-update-tests-metadata-uninitialized-constant-gitlab-in-rspec_flaky-report' into 'master'

Fix error when running update-tests-metadata in master

Closes #216349

See merge request gitlab-org/gitlab!30940

lib/rspec_flaky/report.rb

@@ -40,7 +40,7 @@ module RspecFlaky
       report_path_dir = File.dirname(file_path)
       FileUtils.mkdir_p(report_path_dir) unless Dir.exist?(report_path_dir)
 
-      File.write(file_path, Gitlab::Json.pretty_generate(flaky_examples.to_h))
+      File.write(file_path, JSON.pretty_generate(flaky_examples.to_h))
     end
 
     def prune_outdated(days: OUTDATED_DAYS_THRESHOLD)