Update changelog for 1.23.0 (#17952)

Author: kburtram

CHANGELOG.md

@@ -1,5 +1,11 @@
 # Change Log
 
+## Version 1.23.0
+* Release date: July, 31, 2024
+* Release status: GA
+### What's new in 1.23.0
+* update STS dependency to address [Transaction Isolation Level](https://github.com/microsoft/azuredatastudio/issues/25525) bug
+
 ## Version 1.22.1
 * Release date: January, 10, 2024
 * Release status: GA