ci: enforce stricter PR title checking (#4301)

* ⚡ Enforce stricter PR title checking

* 🔥 Remove code fence

.github/workflows/check-pr-title.yml

@@ -1,4 +1,4 @@
-name: Test Pull Request Semantics
+name: Check PR title
 
 on:
   pull_request:
@@ -10,23 +10,30 @@ on:
 jobs:
   check-pr-title:
     runs-on: ubuntu-latest
-    permissions:
-      checks: write
-      pull-requests: read
-      contents: read
+    timeout-minutes: 5
     steps:
-      - uses: amannn/action-semantic-pull-request@v4
+      - name: Validate PR title
+        id: validate_pr_title
+        uses: ivov/validate-n8n-pull-request-title@v1
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Post validation issue comment
+        uses: marocchino/sticky-pull-request-comment@v2
+        if: always()
         with:
-          # https://www.notion.so/n8n/Release-Process-fce65faea3d5403a85210f7e7a60d0f8
-          types: |
-            feat
-            fix
-            perf
-            test
-            docs
-            refactor
-            build
-            ci
-          requireScope: false
+          header: pr_title_failed_validation
+          message: |
+            Thank you for your contribution!
+            PR titles in this repo follow our version of the Conventional Commits spec.
+            This allows us to automatically generate the changelog for the next release.
+            Therefore, we ask you to adjust your PR title to solve the issue(s) below:
+
+            ${{ steps.validate_pr_title.outputs.validation_issues }}
+
+      - name: Remove validation issue comment
+        if: ${{ steps.validate_pr_title.outputs.validation_issues == null }}
+        uses: marocchino/sticky-pull-request-comment@v2
+        with:
+          header: pr_title_failed_validation
+          delete: true