chore(dependencies): update package versions in package-lock.json and package.json

- Upgraded nodemailer from version 7.0.9 to 8.0.4 for improved email handling.
- Updated brace-expansion, flatted, picomatch, and socket.io-parser to their latest versions across frontend and backend for better performance and security.
- Incremented versions of other dependencies like sequelize and jspdf to ensure compatibility and access to new features.

backend/package.json

@@ -28,7 +28,7 @@
     "mysql2": "^3.10.3",
     "node-cron": "^4.2.1",
     "node-fetch": "^3.3.2",
-    "nodemailer": "^7.0.9",
+    "nodemailer": "^8.0.4",
     "pdf-parse": "^1.1.1",
     "pdfjs-dist": "^5.4.394",
     "playwright": "^1.58.2",