github-actions: extend trigger glob to match suffix branches

Catches *_ciqlts9_2-no-ltp, *_ciqlts9_2-pr-only, and other branch-name
suffix variants used by the kernelCI skip-stages feature.

Author: shreeya-patel98

.github/workflows/kernel-build-and-test-multiarch-trigger.yml

@@ -4,6 +4,7 @@ on:
   push:
     branches:
       - '*_ciqlts9_2'
+      - '*_ciqlts9_2-*'
   pull_request:
     types: [opened, synchronize, reopened]
     branches: