updated the title

Co-authored-by: Brendan Irvine-Broque <[email protected]>

Author: whoiskatrin

src/content/changelog/agents/2025-06-24-announcing-sandboxes.mdx

@@ -1,5 +1,5 @@
 ---
-title: Announcing Sandboxes for your AI-generated code
+title: Run AI-generated code on-demand with Code Sandboxes (new)
 description: You can start creating sandboxes today by installing our new Sandbox package.
 products:
   - agents