chore(project): update Node.js to v20 LTS

[joshblack]

Given that Node.js is now on v21, we have an LTS version at v20 that we can migrate to 👀

Changelog

New

Changed

• Update .nvmrc to use v20
• Update GitHub Actions to use Node.js v20

Removed

Rollout strategy

None

Testing & Reviewing

• Verify that CI jobs continue to work as expected 😅
• Verify storybook continues to run as expected locally
• Verify that Gatsby continues to run as expected locally

[changeset-bot]

⚠️ No Changeset found

Latest commit: 2928b47

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

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[github-actions]

size-limit report 📦

Path	Size
dist/browser.esm.js	104.36 KB (0%)
dist/browser.umd.js	104.91 KB (0%)

[pksjce]

Tried this out and could not start docs for some reason. Did you face any similar issues?

[broccolinisoup]

@pksjce I didn't have any issues running docs or storybook on this PR. What is the error you are seeing on the docs? Josh recently helped me fix some local docs issue so I can try helping you 🙌🏻

[broccolinisoup]

Everything seems to be in order ✨ Hope the GH actions will like v20 too 🤞🏻