chore: migrate vm2 to isolated-vm

[echo094]

The maintenance of vm2 has been discontinued due to critical security issues (patriksimek/vm2#533), and isolated-vm is suggested as replacement.

Quoted from the requirements of isolated-vm:

This project requires nodejs version 16.x (or later).

🚨 If you are using a version of nodejs 20.x or later, you must pass --no-node-snapshot to node.

Furthermore, to install this module you will need a compiler installed. If you run into errors while
running npm install isolated-vm it is likely you don't have a compiler set up, or your compiler is
too old.

• Windows + OS X users should follow the instructions here: node-gyp
• Ubuntu users should run: sudo apt-get install python g++ build-essential
• Alpine users should run: sudo apk add python3 make g++
• Amazon Linux AMI users should run: sudo yum install gcc72 gcc72-c++
• Arch Linux users should run: sudo pacman -S make gcc python
• Red Hat users should run: sudo dnf install python3 make gcc gcc-c++ zlib-devel brotli-devel openssl-devel

[mgttt]

patriksimek/vm2#533 (comment)