gitlab: fix logic for changing docker tag on stable branches

This fixes:

  commit e28112d007
  Author: Daniel P. Berrangé <berrange@redhat.com>
  Date:   Thu Jun 8 17:40:16 2023 +0100

    gitlab: stable staging branches publish containers in a separate tag

Due to a copy+paste mistake, that commit included "QEMU_JOB_SKIPPED"
in the final rule that was meant to be a 'catch all' for staging
branches.

As a result stable branches are still splattering dockers from the
primary development branch.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Tested-by: Michael Tokarev <mjt@tls.msk.ru>
Message-ID: <20240906140958.84755-1-berrange@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

.gitlab-ci.d/base.yml

@@ -128,7 +128,7 @@ variables:
       when: manual
 
     # Jobs can run if any jobs they depend on were successful
-    - if: '$QEMU_JOB_SKIPPED && $CI_PROJECT_NAMESPACE == $QEMU_CI_UPSTREAM && $CI_COMMIT_BRANCH =~ /staging-[[:digit:]]+\.[[:digit:]]/'
+    - if: '$CI_PROJECT_NAMESPACE == $QEMU_CI_UPSTREAM && $CI_COMMIT_BRANCH =~ /staging-[[:digit:]]+\.[[:digit:]]/'
       when: on_success
       variables:
         QEMU_CI_CONTAINER_TAG: $CI_COMMIT_REF_SLUG