ci: use pnpm/action-setup for pnpm (#108)

Author: MikeMcC399

.github/workflows/ci-build-all-pm.yml

@@ -96,14 +96,16 @@ jobs:
             - uses: actions/download-artifact@v4
               with:
                   name: build
+            - name: Install pnpm
+              uses: pnpm/action-setup@v4
+              with:
+                  version: latest
             - name: Setup Node.js
               uses: actions/setup-node@v4
               with:
                   node-version: "lts/*"
             - name: pnpm add
               run: |
-                  corepack enable pnpm
-                  corepack use pnpm@latest
                   cat > .npmrc <<EOT
                   auto-install-peers=true
                   node-linker=hoisted