Maintenance: Improve configuration of packager.io CI jobs

.gitlab/ci/test/packager.io.yml

@@ -4,7 +4,7 @@
   interruptible: false
   rules:
   # These jobs can only run for a) published paths and b) when triggered after the packager.io build is complete.
-  - if: ($CI_PIPELINE_SOURCE == "schedule" || $CI_PIPELINE_SOURCE == "web") && $CI_COMMIT_REF_NAME =~ /^(private|develop)/
+  - if: ($CI_PIPELINE_SOURCE == "schedule" || $CI_PIPELINE_SOURCE == "web") && $CI_COMMIT_REF_NAME =~ /^(stable|develop)/
   services: []
   cache: []
   before_script: []