update changelog (Azure#23725)

Author: xiangyan99

sdk/core/azure-core/CHANGELOG.md

@@ -1,17 +1,11 @@
 # Release History
 
-## 1.23.1 (Unreleased)
-
-### Features Added
-
-### Breaking Changes
+## 1.23.1 (2022-03-31)
 
 ### Bugs Fixed
 
 - Allow stream inputs to the `content` kwarg of `azure.core.rest.HttpRequest` from objects with a `read` method  #23578
 
-### Other Changes
-
 ## 1.23.0 (2022-03-03)
 
 ### Features Added