fix: Update pnpm version and install command in GitHub Actions workflow

- Update pnpm version from 8 to 10 to match local environment
- Update pnpm/action-setup from v2 to v4
- Use --no-frozen-lockfile flag to resolve CI installation issues

Author: jungtaeinn

.github/workflows/deploy.yml

@@ -27,9 +27,9 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Setup pnpm
-        uses: pnpm/action-setup@v2
+        uses: pnpm/action-setup@v4
         with:
-          version: 8
+          version: 10
 
       - name: Setup Node.js
         uses: actions/setup-node@v4
@@ -38,12 +38,7 @@ jobs:
           cache: 'pnpm'
 
       - name: Install dependencies
-        run: |
-          if [ -f pnpm-lock.yaml ]; then
-            pnpm install --frozen-lockfile
-          else
-            pnpm install
-          fi
+        run: pnpm install --no-frozen-lockfile
 
       - name: Build
         run: pnpm build