Update to Node 20 | Update to yarn 4.1.0

[anselmbradford]

Changes

• Update to yarn 4.1.0
• Update to node 20

How to test this PR

1. yarn install should pass.

Screenshots

Notes

• .npmrc is ignored, according to https://yarnpkg.com/migration/guide
• I'm unclear when yarn prepack would be run, but the functionality for it to automatically run does not exist any longer. See https://yarnpkg.com/migration/guide#update-your-configuration-to-the-new-settings

[netlify]

✅ Deploy Preview for cfpb-design-system-react ready!

Name	Link
🔨 Latest commit	01e5574
🔍 Latest deploy log	https://app.netlify.com/sites/cfpb-design-system-react/deploys/65e0be1c46620b0008afcf28
😎 Deploy Preview	https://deploy-preview-314--cfpb-design-system-react.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[contolini]

Update the .nvmrc file to lts/iron to specify v20. Netlify is failing because it's still trying to build with v16 (gallium)

[contolini]

The yarn docs are kinda confusing but when they say "custom pre and post scripts are no longer supported" they mean putting the word pre in front of any random script name. E.g. if you have a script called lint, you used to be able to create another one called prelint and it would automatically run before lint.

Yarn still supports some standard scripts that include the pre prefix, like prepack and prepublish.

FWIW, the reason this repo has a prepack script is because it's run by the SBL frontend after it downloads this library directly from github:

Each time Yarn has to fetch a dependency from a "raw" source (such as a Git repository), it will automatically run yarn install and yarn pack to generate the package to use.

[anselmbradford]

Update the .nvmrc file to lts/iron to specify v20. Netlify is failing because it's still trying to build with v16 (gallium)

Thanks @contolini ! I updated this in f5a107d

Is there some reason why we shouldn't put the actual version number in there? v20 like we do in cfgov https://github.com/cfpb/consumerfinance.gov/blob/main/.nvmrc

[contolini]

v20 is fine by me!