Create congratulations bot (#5404)

- Created congratulations bot :
<img width="939" alt="Screenshot 2024-05-14 at 12 47 13"
src="https://github.com/twentyhq/twenty/assets/102751374/5138515f-fe4d-4c6d-9c7a-0240accbfca9">

- Modified OG image

- Added png extension to OG image route

To be noted: The bot will not work until the new API route is not
deployed. Please check OG image with Cloudflare cache.

---------

Co-authored-by: Ady Beraud <a.beraud96@gmail.com>

.github/workflows/ci-utils.yaml

@@ -5,6 +5,7 @@ on:
   # see: https://securitylab.github.com/research/github-actions-preventing-pwn-requests/
   # and: https://github.com/facebook/react-native/pull/34370/files
   pull_request_target:
+    types: [opened, synchronize, reopened, closed]
 permissions:
   actions: write
   checks: write
@@ -19,6 +20,7 @@ concurrency:
 jobs:
   danger-js:
     runs-on: ubuntu-latest
+    if: github.event.action != 'closed'
     steps:
       - uses: actions/checkout@v4
       - name: Install dependencies
@@ -27,3 +29,15 @@ jobs:
         run: cd packages/twenty-utils && npx nx danger:ci
         env:
           DANGER_GITHUB_API_TOKEN: ${{ github.token }}
+  
+  congratulate:
+    runs-on: ubuntu-latest
+    if: github.event.action == 'closed' && github.event.pull_request.merged == true
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install dependencies
+        uses: ./.github/workflows/actions/yarn-install
+      - name: Run congratulate-dangerfile.js
+        run: cd packages/twenty-utils && npx nx danger:congratulate
+        env:
+          DANGER_GITHUB_API_TOKEN: ${{ secrets.GITHUB_TOKEN }}