Bump min Node.js version to 22 (i.e. drop Node 20 and 21) #1862
Description
At some point in H1 2026 we will want to drop Node 20 support. Not urgent but this unlocks a few things.
- drop isomorphic-ws #1810
- @scure/bip39 2.0 is an ESM package with dependencies, and Yarn 4's import loader hooks are compatible with node 22+, not node 20, so there's an error in the node 20 CI. Same trouble as at transpile to ESM with tsdown #1804 from adopt @scure/bip39 #1843