Update news.md for 4.6.1

Author: BryanFauble

docs/news.md

@@ -9,6 +9,15 @@ detailing some of the changes.
 the 4.x.x versions hidden behind optional feature flags or different import paths. Any
 breaking changes will not be included until v5.0.
 
+## 4.6.0 (2024-10-04)
+
+### Highlights
+- Additional retry logic for downloading of files to support more stability and durability of long-running download processes
+
+### Bug Fixes
+-  \[[SYNPY-1548](https://sagebionetworks.jira.com/browse/SYNPY-1548)\] - Concurrent file downloads hitting http 403
+
+
 ## 4.6.0 (2024-10-04)
 
 ### Highlights