Fix: Add pnpm setup action (#12)

Author: luckrnx09

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

@@ -35,8 +35,23 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: "18.x"
-          cache: pnpm
-      - name: Install Dependencies
+      - name: Install pnpm
+        uses: pnpm/action-setup@v2
+        with:
+          version: 8
+          run_install: false
+      - name: Get pnpm store directory
+        shell: bash
+        run: |
+          echo "STORE_PATH=$(pnpm store path --silent)" >> $GITHUB_ENV
+      - name: Setup pnpm cache
+        uses: actions/cache@v3
+        with:
+          path: ${{ env.STORE_PATH }}
+          key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
+          restore-keys: |
+            ${{ runner.os }}-pnpm-store-
+      - name: Install dependencies
         run: pnpm install
       - name: Build
         run: pnpm run build