chore(repo): make sure that the ci pipeline runs on any release branches (#31257)

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## Current Behavior
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Pipeline only runs on `master` and PRs

## Expected Behavior
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Pipeline runs on any release branches and PRs

## Related Issue(s)
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merged. -->

Fixes #

.github/workflows/ci.yml

@@ -4,6 +4,7 @@ on:
   push:
     branches:
       - master
+      - '[0-9]+.[0-9]+.x'
   pull_request:
     branches:
       - "**"