feat: improve password encryption methods

[jinoosss]

What type of PR is this?

• feature

What this PR does:

• Removed Static Key Usage:
  • Eliminated the use of a hardcoded static encryption key (ENCRYPT_CIPHER_KEY), reducing the risk of key leakage or unauthorized access.
• Implemented AES-GCM:
  • Transitioned from AES-CBC (CryptoJS) to AES-GCM using Web Crypto API, which provides built-in integrity verification through authentication tags.
• Introduced Initialization Vector (IV):
  • Added a dynamically generated IV (crypto.getRandomValues) to ensure that identical inputs produce different encrypted outputs.
• In-Memory Key Management:
  • Encryption keys are now stored only in memory using CryptoKey, ensuring they are not persisted in session or local storage.