Azure Core January Beta Release (#6318)

* Azure Core January Beta Release

* Update release date to 2025-01-09

---------

Co-authored-by: Anton Kolesnyk <antkmsft@users.noreply.github.com>

Author: antkmsft

sdk/core/azure-core/CHANGELOG.md

@@ -1,14 +1,10 @@
 # Release History
 
-## 1.15.0-beta.2 (Unreleased)
+## 1.15.0-beta.2 (2025-01-09)
 
 ### Features Added
 
-### Breaking Changes
-
-### Bugs Fixed
-
-### Other Changes
+- Made default constructor for `Azure::Core::Uuid` implicit.
 
 ## 1.15.0-beta.1 (2024-11-13)