[Dev] Update NPM packages and JS build

[Soare-Robert-Daniel]

We should update our NPM packages since libs like the currently used version of node-sass does not work with the newer version of Node and Python.

We can update the node-sass to an updated version to support the newer version, but the job is half done since this libs is not longer supported for the newer version of SASS.

If we switch to recommended lib sass, we even get warnings like:

Deprecation Warning: Using / for division outside of calc() is deprecated and will be removed in Dart Sass 2.0.0.

Recommendation: math.div(100%, $items) or calc(100% / $items)

More info and automated migrator: https://sass-lang.com/d/slash-div

  ╷
8 │             max-width: (100%/$items - 2);
  │                         ^^^^^^^^^^^
  ╵
    assets/scss/components/elements/_gallery.scss 8:16  @import
    assets/scss/style.scss 16:9                         root stylesheet

Also, this lib is not dependent on the Python version when installed like the old one.