Merge branch...

Merge branch '440179-add-an-alert-for-the-users-who-has-deprecated-gitops-keyword-in-their-agent-s-configuration' into 'master' 

Add an alert to warn about `gitops` keyword deprecation

See merge request !143586



Merged-by: Anna Vovchenko <avovchenko@gitlab.com>
Approved-by: Lorenz van Herwaarden <lvanherwaarden@gitlab.com>
Approved-by: Ilonah Pelaez <ipelaez@gitlab.com>
Reviewed-by: Anna Vovchenko <avovchenko@gitlab.com>
Reviewed-by: Lorenz van Herwaarden <lvanherwaarden@gitlab.com>