Merge pull request #880 from phpDocumentor/backport/1.x/pr-879

[1.x] Merge pull request #879 from phpDocumentor/split-1.x

Author: github-actions[bot]

.github/workflows/sub-split.yaml

@@ -12,6 +12,7 @@ on: # yamllint disable-line rule:truthy
       - "packages/**/*"
     branches:
       - "main"
+      - "1.x"
 
 jobs:
   publish_sub_splits: