lib: deprecate fd usage for fs.truncate(Sync)

PR-URL: https://github.com/nodejs/node/pull/15990


Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>