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>

packages/twenty-website/src/github/contributors/get-latest-update.tsx

@@ -0,0 +1,15 @@
+import { desc } from 'drizzle-orm';
+
+import { findOne } from '@/database/database';
+import { issueModel, pullRequestModel } from '@/database/model';
+
+export async function getLatestUpdate() {
+  const latestPR = await findOne(
+    pullRequestModel,
+    desc(pullRequestModel.updatedAt),
+  );
+  const latestIssue = await findOne(issueModel, desc(issueModel.updatedAt));
+  const prDate = new Date(latestPR[0].updatedAt);
+  const issueDate = new Date(latestIssue[0].updatedAt);
+  return (prDate > issueDate ? prDate : issueDate).toISOString();
+}