Upgrade slack-messenger gem to fix Ruby 2.7 deprecation warnings
This pulls in the changes from https://gitlab.com/gitlab-org/slack-notifier/-/merge_requests/5.
Relates to #257438 (closed)
Edited by Stan Hu
This pulls in the changes from https://gitlab.com/gitlab-org/slack-notifier/-/merge_requests/5.
Relates to #257438 (closed)