Update Changelog workflow trigger

.github/workflows/release-notes.yml

diff --git a/.github/workflows/release-notes.yml b/.github/workflows/release-notes.yml
index 0e70427..d82ad6d 100644
--- a/.github/workflows/release-notes.yml
+++ b/.github/workflows/release-notes.yml
@@ -4,8 +4,7 @@
     types: [closed,reopened]
   push:
     branches:
-      - master
-      - 4.0.x
+      - '[4-9]+.[0-9]+.x'
 jobs:
   release_notes:
     runs-on: ubuntu-latest