chore: Update GitHub Actions and Node.js versions (#51)

Author: 7nohe

.github/workflows/test.yml

@@ -17,14 +17,14 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
-      - uses: pnpm/action-setup@v2
+        uses: actions/checkout@v4
+      - uses: pnpm/action-setup@v3
         with:
           version: 8
       - name: Install Node.js
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: 20
           cache: 'pnpm'
 
       - name: Install dependencies