Tech Titans Tackle Deprecation Head-On: GH Actions Get a Major Upgrade!

In a bid to eliminate warnings and boost performance, developers update workflows to the cutting-edge Node 20.

Commit Details:

chore: Update GH Actions versions to avoid deprecation warnings (#1789) ## Motivation Remove deprecation warnings. ## Change Summary Update the actions so they run on Node 20. ## Merge Checklist - [x] PR title adheres to the [conventional commits](https://www.conventionalcommits.org/en/v1.0.0/) standard - [ ] PR has a [changeset](https://github.com/farcasterxyz/hub-monorepo/blob/main/CONTRIBUTING.md#35-adding-changesets) - [x] PR has been tagged with a change label(s) (i.e. documentation, feature, bugfix, or chore) - [ ] PR includes [documentation](https://github.com/farcasterxyz/hub-monorepo/blob/main/CONTRIBUTING.md#32-writing-docs) if necessary. - [x] All [commits have been signed](https://github.com/farcasterxyz/hub-monorepo/blob/main/CONTRIBUTING.md#22-signing-commits) <!-- start pr-codex --> --- ## PR-Codex overview This PR updates the GitHub Actions workflows to use version 4 of `actions/checkout` and `actions/setup-node`. ### Detailed summary - Updated `actions/checkout` to version 4. - Updated `actions/setup-node` to version 4 with specified `node-version`. > ✨ Ask PR-Codex anything about this PR by commenting with `/codex {your question}` <!-- end pr-codex -->