feat: added if_merged to inform when a PR will be merged

.github/workflows/pull-request-closed.yml

@@ -0,0 +1,50 @@
+# https://docs.github.com/en/actions/using-workflows/caching-dependencies-to-speed-up-workflows#force-deleting-cache-entries
+name: Pull resquest closed
+on:
+  pull_request:
+    types:
+      - closed
+
+jobs:
+  cleanup:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Cleanup up branch cache
+        run: |
+          gh extension install actions/gh-actions-cache
+
+          echo "Fetching list of cache keys"
+          cacheKeysForPR=$(gh actions-cache list -R $REPO -B $BRANCH -L 100 | cut -f 1 )
+
+          ## Setting this to not fail the workflow while deleting cache keys. 
+          set +e
+          echo "Deleting caches..."
+          for cacheKey in $cacheKeysForPR
+          do
+              gh actions-cache delete $cacheKey -R $REPO -B $BRANCH --confirm
+          done
+          echo "Done"
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          REPO: ${{ github.repository }}
+          BRANCH: refs/pull/${{ github.event.pull_request.number }}/merge
+  if_merged:
+    if: github.event.pull_request.merged == true
+    runs-on: ubuntu-latest
+    steps:
+      - name: Comment the schedule release
+        id: conditional-comment
+        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
+        with:
+          script: |
+            const commentText = "The content of this pull request will be made available as part of our next release. For the full schedule of upcoming releases, check out our [Release Radar](https://github.com/carbon-design-system/carbon/wiki/Release-radar) page."
+
+            github.rest.issues.createComment({
+              issue_number: context.issue.number,
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              body: commentText
+            });
+      - name: Set Output
+        if: steps.conditional-comment.outcome == 'success'
+        run: echo "Comment added successfully."