use node 18 and clear pipeline warnings

[Burnett2k]

Description

As part of an internal Formidable Open Source audit, we're going through and updating some GH actions to no longer use unsupported versions of node. Also, removing them from our testing pipelines.

I also noticed we weren't utilizing a cache for yarn, so I added that into setup-node action to speed things up slightly.

Checklist:

• All tests are passing
• Type definitions, if updated, pass both test-ts-defs and test-ts-usage
• Benchmark performance has not significantly decreased
• Bundle size has not been significantly impacted
• The bundle size badge has been updated to reflect the new size

[changeset-bot]

⚠️ No Changeset found

Latest commit: 4310e6e

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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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.21%. Comparing base (01b5798) to head (ac2c4db).

❗ Current head ac2c4db differs from pull request most recent head 4310e6e. Consider uploading reports for the commit 4310e6e to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #134   +/-   ##
=======================================
  Coverage   98.21%   98.21%           
=======================================
  Files           1        1           
  Lines          56       56           
=======================================
  Hits           55       55           
  Misses          1        1           

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