WIP: Bump chef-gem version to 12.21.4 to get updates to net-ssh dependency
net-ssh v4 was offically bumped in https://github.com/chef/chef/commit/31b5aabd2c2ff37b0eba63033971087f1c6db000
Closes #2727 (closed)
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
net-ssh v4 was offically bumped in https://github.com/chef/chef/commit/31b5aabd2c2ff37b0eba63033971087f1c6db000
Closes #2727 (closed)