chore: update GitHub Actions workflow for deployment

- Upgraded actions/checkout from v2 to v4 for improved performance.
- Replaced Node.js setup with Bun setup using oven-sh/setup-bun@v2.
- Updated dependency installation command to use the --frozen-lockfile option for consistency.

Author: windbytes

.github/workflows/deploy.yml

@@ -11,15 +11,15 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
-      - name: Setup Node.js
-        uses: actions/setup-node@v2
+      - name: Setup Bun
+        uses: oven-sh/setup-bun@v2
         with:
-          node-version: '22'
+          bun-version: latest
 
       - name: Install dependencies
-        run: bun install
+        run: bun install --frozen-lockfile
 
       - name: Build project
         run: bun run build:prod