ci/fix workflow (#10)

* ci: setup pnpm in workflow

* ci: rename workflow action

Author: ssynowiec

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

@@ -23,7 +23,12 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v5
 
-      - name: Set up Node based on .nvmrc
+      - name: Setup pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          run_install: false
+
+      - name: Set up Node
         uses: actions/setup-node@v5
         with:
           node-version-file: '.nvmrc'