Support node v16

[halflings]

airtable/blocks-cli only works with node v14, which is now in maintenance mode.

The current recommended version is v16:
https://nodejs.org/en/about/releases/

I'd like to build an app on the Airtable marketplace (to support ML inference), but cannot downgrade other packages that depend on node v16 to make this happen.

Would it be possible to work on node v16 support?

BTW here's the error message when installing it on node v16:

npm WARN deprecated urix@0.1.0: Please see https://github.com/lydell/urix#deprecated
npm WARN deprecated resolve-url@0.2.1: https://github.com/lydell/resolve-url#deprecated
npm WARN deprecated chokidar@2.1.8: Chokidar 2 will break on node v14+. Upgrade to chokidar 3 with 15x less dependencies.
npm WARN deprecated querystring@0.2.0: The querystring API is considered Legacy. new code should use the URLSearchParams API instead.
npm WARN deprecated uuid@3.0.1: Please upgrade  to version 7 or higher.  Older versions may use Math.random() in certain circumstances, which is known to be problematic.  See https://v8.dev/blog/math-random for details.
npm WARN deprecated uuid@3.4.0: Please upgrade  to version 7 or higher.  Older versions may use Math.random() in certain circumstances, which is known to be problematic.  See https://v8.dev/blog/math-random for details.
npm ERR! Cannot read property 'split' of null

Maybe upgrading some of these packages would be enough to get v16 support.

[abettermap]

Looks like same or similar problem as #19.