chore: set Artifact Hub repository ID for StepAction

Co-Authored-By: Claude <noreply@anthropic.com>
Signed-off-by: Vincent Demeester <vdemeest@redhat.com>

Author: vdemeester

stepaction/artifacthub-repo.yaml

@@ -1,5 +1,5 @@
 # Artifact Hub repository metadata file
-repositoryID: # will be filled after first scan
+repositoryID: 8507edc8-b604-4a03-83f8-61318c0f9266
 owners:
   - name: Vincent Demeester
     email: vincent@sbr.pm