update: upgrade dependencies and ci workflows (#54)

Author: luckrnx09

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

@@ -34,16 +34,11 @@ jobs:
       - name: Setup Node
         uses: actions/setup-node@v4
         with:
-          node-version: "18.x"
-      - name: Install pnpm
-        uses: pnpm/action-setup@v2
-        with:
-          version: 8
-          run_install: false
+          node-version: "20.x"
       - name: Install dependencies
-        run: pnpm install --no-frozen-lockfile
+        run: npm install
       - name: Build
-        run: pnpm run build
+        run: npm run build
       - name: Setup Pages
         uses: actions/configure-pages@v4
       - name: Upload artifact