fix(deploy): use PNPM cache instead

Author: 99linesofcode

.github/workflows/deploy.yaml

@@ -39,7 +39,7 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: 18
-          cache: npm # or pnpm / yarn
+          cache: pnpm
       - name: Setup Pages
         uses: actions/configure-pages@v4
       - name: Install dependencies