Fixed workflow to work with pnpm and use node version from nvmrc

.github/workflows/deploy-to-gh-pages.yml

@@ -1,5 +1,5 @@
 # Simple workflow for deploying static content to GitHub Pages
-name: Deploy react to GH pages
+name: Deploy React app to GH pages
 
 on:
   # Runs on pushes targeting the default branch
@@ -30,22 +30,34 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+
+      - uses: pnpm/action-setup@v4
+        name: Install pnpm
+        with:
+          version: 9
+          run_install: false
+
       - name: Set up Node
         uses: actions/setup-node@v4
         with:
-          node-version: 20
-          cache: 'npm'
+          node-version-file: '.nvmrc'
+          cache: 'pnpm'
+
       - name: Install dependencies
-        run: npm ci
+        run: pnpm install --frozen-lockfile # npm ci
+
       - name: Build
-        run: npm run build
+        run: pnpm run build
+
       - name: Setup Pages
         uses: actions/configure-pages@v4
+
       - name: Upload artifact
         uses: actions/upload-pages-artifact@v3
         with:
           # Upload dist folder
           path: './dist'
+
       - name: Deploy to GitHub Pages
         id: deployment
         uses: actions/deploy-pages@v4