Support node 22

[joehan]

Description

Fixes a bunch of places where our dependencies were using builtin methods that were deprecated in Node 22.

TODO before merge:

• Switch to a real version of superstatic instead of pointing at a git branch
• Add node 22 to CI

Scenarios Tested

Ran the tests, and ran through a bunch of common commands without getting deprecation notices.

Sample Commands

[joehan]

Started to move Ci to node 22, but doing it piecemeal:

1. In this PR, added 22 for the 'cheap' tests to verify they work.
2. Next, I'll make these required checks (and remove the redundant versions)
3. In a follow up PR, i'll move the integration tests over, and confirm that they work. I'll force merge that and then update the branch protection rules with the new required checks.