ci: pin upload-pages-artifact to v5.0.0

Author: pratyush618

.github/workflows/deploy.yml

@@ -35,7 +35,7 @@ jobs:
       - name: Build static site
         run: pnpm build
 
-      - uses: actions/upload-pages-artifact@v5
+      - uses: actions/upload-pages-artifact@v5.0.0
         with:
           path: out