ci: Use node 20 in CI

Author: aklinker1

.github/actions/setup/action.yml

@@ -22,7 +22,7 @@ runs:
     - name: 🛠️ Setup NodeJS
       uses: actions/setup-node@v4
       with:
-        node-version: 18
+        node-version: 20
         cache: pnpm
 
     - name: 📦 Install Dependencies