Fix CI

Author: fhammerschmidt

.github/workflows/ci.yml

@@ -15,12 +15,16 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v2
+      - uses: actions/setup-node@v4
+
         with:
-          node-version: '18.x'
+          node-version: 20
+
+      - name: Corepack
+        run: corepack enable
 
       - name: Yarn install
         run: yarn