Merge branch 'jivanvl-make-jenkins-banner-dismissable' into 'master'

Make Jenkins Banner dismissable

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/172151



Merged-by: Adam Hegyi <ahegyi@gitlab.com>
Approved-by: Briley Sandlin <bsandlin@gitlab.com>
Approved-by: Max Orefice <morefice@gitlab.com>
Approved-by: Adam Hegyi <ahegyi@gitlab.com>
Reviewed-by: Max Orefice <morefice@gitlab.com>
Reviewed-by: Max Fan <mfan@gitlab.com>
Reviewed-by: Lysanne Pinto <lpinto@gitlab.com>
Co-authored-by: Jose Ivan Vargas <jvargas@gitlab.com>