update install setup flow

Author: iainnash

.github/workflows/build.yml

@@ -9,16 +9,21 @@ jobs:
     steps:
       - name: Checkout 🛎️
         uses: actions/checkout@master
+      
+      - uses: pnpm/action-setup@v4
+        name: Install pnpm
+        with:
+          run_install: false
 
       - name: Install Node.js
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version: 22
-          cache: "pnpm"
+          cache: 'pnpm'
 
       - name: Install project dependencies
         shell: bash
         run: pnpm install
 
       - name: Build 🏗️
-        run: yarn build
+        run: pnpm build