skip release-subpackages-snapshot when the branch name starts with changeset-release/

.github/workflows/release-subpackages.yml

@@ -21,6 +21,8 @@ concurrency:
 jobs:
   release-subpackages-snapshot:
 
+    if: "!startsWith(github.head_ref, 'changeset-release/')"
+
     runs-on: ubuntu-latest
 
     steps: