Use Node.js 20.3.0 as dev/CI Node.js version

[char0n]

It's faster than 16.13.2 (which we currently use) which might save us some processing time. It also comes with newer and faster version of npm. On top of that some of our dependency started to complain that they need higher version than 16.13.2.

NOTE 1:
Unable to use Node.js@20.3.0 - tree-sitter/node-tree-sitter#127. Falling back to latest Node.js@18.16.0. This is the version that tree-sitter still works.

NOTE 2:
To use WASM files in Node.js environment, tree-sitter-cli and web-tree-sitter needed to be updated to v0.20.8. web-tree-sitter stopped working in Node.js environment.

[char0n]

tree-sitter@0.20.2 was released which adds support for Node@20.