use merge-commit (#2889)

Author: skarimo

.github/workflows/release.yml

@@ -36,7 +36,7 @@ jobs:
 
       - name: Release packages
         env:
-          HEAD_SHA: ${{ github.event.pull_request.head.sha }}
+          HEAD_SHA: ${{ github.event.pull_request.merge_commit_sha }}
           BASE_SHA: ${{ github.event.pull_request.base.sha }}
           GH_TOKEN: ${{ steps.get_token.outputs.token }}
         shell: bash