actually npm install in tests

Author: MrVauxs

.github/workflows/test.yml

@@ -17,7 +17,11 @@ jobs:
       - uses: actions/checkout@v2
 
       - name: Use Node.js
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+
+      - run: npm ci
 
       - name: Install Dependencies
         run: npm install @actions/core