Prevent release workflow on unmerged PRs

Author: Ndpnt

.github/workflows/release.yml

@@ -14,7 +14,7 @@ jobs:
     uses: "OpenTermsArchive/engine/.github/workflows/test.yml@main"
   release:
     needs: [ changelog, test ]
-    if: needs.changelog.outputs.release-type != 'no-release'
+    if: github.event.pull_request.merged == true && needs.changelog.outputs.release-type != 'no-release'
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
@@ -73,7 +73,7 @@ jobs:
           client-payload: '{"version": "v${{ steps.release-changelog.outputs.version }}"}'
 
   clean_changelog:
-    if: needs.changelog.outputs.release-type == 'no-release'
+    if: github.event.pull_request.merged == true && needs.changelog.outputs.release-type == 'no-release'
     needs: [ changelog ]
     runs-on: ubuntu-latest
     steps: