feat: publish CFT in path with branch name instead of commit sha (#40)

Author: airadier

.github/workflows/ci-pull-request.yaml

@@ -55,4 +55,4 @@ jobs:
       working-directory: ./templates
       env:
         S3_BUCKET: cf-templates-cloudvision-ci
-        S3_PREFIX: pr/${{ github.sha }}
+        S3_PREFIX: pr/${{ github.event.pull_request.head.ref }}