fix(deps): update payloadcms monorepo to v3.81.0

Author: github-actions[bot]

apps/backend/package.json

@@ -18,11 +18,11 @@
     "test:ui": "cross-env NODE_ENV=test vitest --ui --coverage"
   },
   "dependencies": {
-    "@payloadcms/db-mongodb": "3.76.1",
-    "@payloadcms/email-nodemailer": "3.76.1",
-    "@payloadcms/next": "3.76.1",
-    "@payloadcms/richtext-lexical": "3.76.1",
-    "@payloadcms/storage-uploadthing": "3.76.1",
+    "@payloadcms/db-mongodb": "3.81.0",
+    "@payloadcms/email-nodemailer": "3.81.0",
+    "@payloadcms/next": "3.81.0",
+    "@payloadcms/richtext-lexical": "3.81.0",
+    "@payloadcms/storage-uploadthing": "3.81.0",
     "@react-email/components": "0.5.7",
     "@types/nodemailer": "7.0.11",
     "bcryptjs": "3.0.3",