ci: Fix release workflow again

[release]

.github/workflows/release.yml

@@ -11,10 +11,20 @@ on:
 jobs:
   release:
     runs-on: ubuntu-latest
-    if: ${{ github.event.workflow_run.conclusion == 'success' && github.repository == 'flathub-infra/flatpak-builder-lint' && github.ref == 'refs/heads/master' && contains(github.event.head_commit.message, '[release]') }}
+    if: ${{ github.event.workflow_run.conclusion == 'success' && github.repository == 'flathub-infra/flatpak-builder-lint' && github.ref == 'refs/heads/master' }}
     steps:
+      - uses: actions/checkout@v4
+        with:
+          ref: 'master'
+
+      - name: Check last commit message
+        run: |
+          if git log -1 --pretty=%B|xargs|grep -E "\[release\]"; then
+            echo "IS_RELEASE=true" >> "$GITHUB_ENV"
+          fi
 
       - name: Check if docker-manifest succeeded
+        if: env.IS_RELEASE == 'true'
         run: |
           job_status=$(gh run view ${{ github.event.workflow_run.id }} --json jobs --jq '.jobs[] | select(.name=="docker-call / docker-manifest") | .conclusion')
           echo "Status: $job_status"