chore(deps): Bump actions/setup-node from 2 to 4

Bumps [actions/setup-node](https://github.com/actions/setup-node) from 2 to 4.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](actions/setup-node@v2...v4)

---
updated-dependencies:
- dependency-name: actions/setup-node
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/asset_sync.yml

@@ -22,7 +22,7 @@ jobs:
         run: echo "currentHash=$(find unity-ggjj/Assets/Resources/InkDialogueScripts/CaseDemo/2-1-FullScene.ink -type f -exec md5sum {} \; | md5sum)" >> $GITHUB_ENV
 
       - name: Setup node.js
-        uses: actions/setup-node@v2
+        uses: actions/setup-node@v4
         with:
           node-version-file: 'asset_sync/.nvmrc'