Use oven-sh/setup-bun@v2 to build website

Author: a-hilaly

.github/workflows/deploy-docs.yaml

@@ -18,7 +18,7 @@ jobs:
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0
-      - uses: oven-sh/setup-bun@v4
+      - uses: oven-sh/setup-bun@v2
         with:
           bun-version: latest