CI: temporarily disable Installer test on el9/c9s due to rhbz#2059565

Temporarily disable Installer test case in the CI on RHEL-9 and CentOS
Stream 9 until https://bugzilla.redhat.com/show_bug.cgi?id=2059565 is
resolved. This test case is now consistently failing due to the
mentioned bug and makes it impossible for the CI to pass cleanly.

Signed-off-by: Tomas Hozza <thozza@redhat.com>

.gitlab-ci.yml

@@ -488,8 +488,9 @@ Installer:
     matrix:
       - RUNNER:
           - rhos-01/rhel-8.6-nightly-x86_64
-          - rhos-01/rhel-9.0-nightly-x86_64
-          - rhos-01/centos-stream-9-x86_64
+          # disable until https://bugzilla.redhat.com/show_bug.cgi?id=2059565 is fixed
+          #- rhos-01/rhel-9.0-nightly-x86_64
+          #- rhos-01/centos-stream-9-x86_64
 
 SCHEDULED_CLOUD_CLEANER:
   stage: cleanup