Disable qs library

Being able to pass JSON objects in a query string is unneeded and
possibly insecure, thus should be avoided if possible.

src/main.ts

@@ -19,7 +19,7 @@ async function main(): Promise<void> {
 
     const app = express();
     app.use(express.json());
-    app.use(express.urlencoded({ extended: true }));
+    app.use(express.urlencoded({ extended: false }));
     app.use(compression());
     app.use(cookiepaser());