Update workflow

Author: nicnocquee

.github/workflows/ci.yml

@@ -42,6 +42,11 @@ jobs:
         with:
           node-version: '20'
 
+      - name: Set up pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: 9
+
       - name: Install dependencies
         run: pnpm install
 
@@ -83,6 +88,11 @@ jobs:
         with:
           node-version: '20'
 
+      - name: Set up pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: 9
+
       - name: Install dependencies
         run: pnpm install