Update routing changelog (Azure#47441)

Author: dubiety

sdk/maps/Azure.Maps.Routing/CHANGELOG.md

@@ -1,20 +1,16 @@
 # Release History
 
-## 1.0.0-beta.4 (Unreleased)
-
-### Features Added
-
-### Breaking Changes
+## 1.0.0-beta.4 (2024-12-10)
 
 ### Bugs Fixed
 
-### Other Changes
+- Fix deserialization error in `RouteMatrixResultResponse` when POST route matrix returns errors.
 
 ## 1.0.0-beta.3 (2024-08-06)
 
 ### Bugs Fixed
 
-- Support multiple SectionTypes in SectionFilter
+- Support multiple `SectionTypes` in `SectionFilter`
 
 ## 1.0.0-beta.2 (2023-07-13)