[Azure.Core.Experimental] Update CHANGELOG.md (Azure#49004)

Author: nisha-bhatia

sdk/core/Azure.Core.Experimental/CHANGELOG.md

@@ -1,17 +1,11 @@
 # Release History
 
-## 0.1.0-preview.37 (Unreleased)
+## 0.1.0-preview.37 (2025-03-20)
 
 ### Features Added
 
 - Added the following types for 3rd-party Authentication support: `AuthenticationTokenProvider`, `GetTokenOptions`, `AccessToken`, and `OAuth2BearerTokenAuthenticationPolicy`.
 
-### Breaking Changes
-
-### Bugs Fixed
-
-### Other Changes
-
 ## 0.1.0-preview.36 (2024-10-03)
 
 ### Breaking Changes