Upgrade Twilio JS SDK

I need to upgrade Twilio JS SDK from V1.13 to V2.13 or higher. The current version is deprecated and causing connection drops.

Requirements:
- Laravel and plain HTML experience
- Ability to handle custom modifications in Twilio integration

Ideal Skills:
- Twilio expertise
- JS SDK upgrade experience
- Laravel proficiency
- Problem-solving for connection issues

Please ensure all current functionalities and custom modifications work post-upgrade.