fix(api): improve 404 handling for unknown API routes

- Refactored the 404 response for API routes to ensure it only triggers for paths starting with '/api/', enhancing clarity in error handling.
- Updated package dependencies in package.json and package-lock.json to maintain version consistency and address potential vulnerabilities.

backend/app.js

@@ -129,6 +129,11 @@ app.get(/^\/(?!api\/).*/, (req, res) => {
 });
 
 // Fallback 404 for unknown API routes
-app.use('/api/*', (req, res) => res.status(404).send('404 Not Found'));
+app.use((req, res, next) => {
+  if (req.path.startsWith('/api/')) {
+    return res.status(404).send('404 Not Found');
+  }
+  return next();
+});
 
 export default app;