Use pinned Node setup action

Signed-off-by: Tim Paine <3105306+timkpaine@users.noreply.github.com>

Author: timkpaine

.copier-answers.yaml

@@ -1,5 +1,5 @@
 # Changes here will be overwritten by Copier
-_commit: 690e994
+_commit: 9f61b35
 _src_path: https://github.com/python-project-templates/base.git
 add_extension: site-webawesome
 brand_name: Example

.github/workflows/build.yaml

@@ -14,14 +14,16 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v7
-      - uses: pnpm/action-setup@v6
+      - name: Checkout
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
         with:
-          version: 11
-      - uses: actions/setup-node@v7
+          persist-credentials: false
+
+      - name: Setup Node.js
+        uses: actions-ext/node/setup@b0536d87c5e92c924bc8667f566f620758280825
         with:
-          node-version: 22.x
-          cache: pnpm
+          version: 22.x
+          js_folder: .
       - run: pnpm install
       - run: pnpm build
       - run: pnpm check