tools: do not run commit-lint on release proposals

Author: aduh95

.github/workflows/commit-lint.yml

@@ -1,6 +1,10 @@
 name: First commit message adheres to guidelines
 
-on: [pull_request]
+on:
+  pull_request:
+    branches:
+      - main
+      - v[0-9]+.x-staging
 
 env:
   NODE_VERSION: lts/*