Update mongo client

Author: siddiquiaffan

package.json

@@ -33,6 +33,6 @@
     "dotenv": "^10.0.0",
     "express": "^4.17.1",
     "grammy": "^1.5.4",
-    "mongodb": "^4.1.3"
+    "mongodb": "^4.9.0"
   }
 }