docs: add news about 4.17.4 release (#4859)

Author: StevenLuMT

site3/website/src/pages/releases.mdx

@@ -29,6 +29,11 @@ Client Guide | API docs
 
 ## News
 
+### 28 July, 2026 Release 4.17.4 available
+
+This is the 52th release of Apache BookKeeper !
+See [BookKeeper 4.17.4 Release Notes](/release-notes#4174) for details.
+
 ### 7 July, 2025 Release 4.17.2 available
 
 This is the 51th release of Apache BookKeeper !