Disable the generation of the executable based on pkg

Since we are now using the latest version of Node.js, we need to move away from pkg since it currently only supports Node 16: https://github.com/vercel/pkg-fetch/issues/302.

Given that, currently, the executable produced by pkg isn't operational, I suggest to disable it until we migrate to https://nodejs.org/api/single-executable-applications.html (including tests to make sure that the executable is working)