refactor: streamline GitHub Actions workflow by removing cache steps and using pnpm for dependency installation

Author: zamkorus

.github/workflows/publish.yml

@@ -25,25 +25,26 @@ jobs:
     name: Build for GitHub Pages
     steps:
       - uses: actions/checkout@v3
+
+      - name: Setup pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: 8
+
       - name: Setup node
         uses: actions/setup-node@v3
         with:
           node-version: ^21.7.3
+          cache: 'pnpm'
 
       - name: Setup Pages
         uses: actions/configure-pages@v5
 
-      - name: Restore cache
-        uses: actions/cache@v4
-        with:
-          path: |
-            .next/cache
-          key: ${{ runner.os }}-nextjs-${{ hashFiles('**/package-lock.json', '**/yarn.lock') }}-${{ hashFiles('**.[jt]s', '**.[jt]sx') }}
-          restore-keys: |
-            ${{ runner.os }}-nextjs-${{ hashFiles('**/package-lock.json', '**/yarn.lock') }}-
-
-      - run: npm install
-      - run: npm run build
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+
+      - name: Build with Next.js
+        run: pnpm run build
 
       - name: Upload artifact
         uses: actions/upload-pages-artifact@v3