Node 22 support

[atomicrobokid]

Engine is restricted to
"node": ">=16.0.0 <=20.x.x",

Any reason why this can't be bumped to include Node 22? I have a project that is node 22 based, and this package throws a warning

[dgrebb]

If I remember correctly something in 21 brought a breaking error, but I'll take another look.

[dgrebb]

Raised #1582 for this @atomicrobokid @garris.

I have no idea what I was thinking with <=20.x.x. All tests, minus one which I've commented on elsewhere, are passing.

Docker intact as well.

[garris]

Awesome! Happy to pull in the bump. I'll follow up on the file extension warning in the other thread. I don't mind reverting that if it's causing a stir.