Allow manual dispatch for centos GH workflow

I need to manually trigger it to solve the Zabbix alert.

Author: RazvanLiviuVarzaru

.github/workflows/build-centos.pip-based.yml

@@ -22,6 +22,7 @@ on:
       - .github/workflows/bbw_build_container_template.yml
 
   workflow_call:
+  workflow_dispatch:
 
 jobs:
   build-images: