Fix CI

.github/workflows/CI.yml

@@ -6,20 +6,30 @@ on:
   pull_request:
     branches: [main]
 
+env:
+  NODE_VERSION: 20.18.1
+  PNPM_VERSION: 10.8.1
+
 jobs:
   test:
     name: Run all tests
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - name: Checkout code
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
-      - name: Setup Node.js
-        uses: actions/setup-node@v3
+      - name: Install pnpm
+        uses: pnpm/action-setup@v4
         with:
-          node-version: 20.18.1
+          version: ${{ env.PNPM_VERSION }}
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ env.NODE_VERSION }}
           cache: pnpm
 
       - name: Install dependencies