maintenance: cache pnpm installation

Author: cmpadden

.github/workflows/cd.yml

@@ -11,25 +11,25 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@master
+        uses: actions/checkout@v4
 
-      - name: Setup node env
-        uses: actions/setup-node@v3
+      - name: Install pnpm
+        uses: pnpm/action-setup@v4
         with:
-          node-version: 20
+          version: 9
+          run_install: false
 
-      - uses: pnpm/action-setup@v2
-        name: Install pnpm
-        id: pnpm-install
+      - name: Install Node.js
+        uses: actions/setup-node@v4
         with:
-          version: 8
-          run_install: false
+          node-version: 20
+          cache: 'pnpm'
+
+      - name: Install dependencies
+        run: pnpm install
 
-      - name: Install and Generate
-        run: |
-          # TODO - cache pnpm installation
-          pnpm install
-          pnpm generate  # files are automatically sym-linked to dist/
+      - name: Generate static files
+        run: pnpm generate
 
       - name: Deploy
         uses: peaceiris/actions-gh-pages@v3