fix: incorrect variable name

Author: bencegadanyi1-nhs

.github/workflows/release.yml

@@ -55,7 +55,7 @@ jobs:
     with:
       dry_run: true
       asdfVersion: ${{ needs.get_asdf_version.outputs.asdf_version }}
-      branch_name: main
+      branch_name: ${{ github.event.pull_request.head.ref || github.ref_name }}
       publish_package: false
       tag_format: ${{ needs.get_asdf_version.outputs.tag_format }}
     secrets: inherit