chore: changelog

Author: vaind

CHANGELOG.md

@@ -13,6 +13,10 @@
 - OperatingSystem will now return macOS as OS name instead of 'Darwin' as well as the proper version. ([#2710](https://github.com/getsentry/sentry-dotnet/pull/3956))
 - Ignore null value on CocoaScopeObserver.SetTag ([#3948](https://github.com/getsentry/sentry-dotnet/pull/3948))
 
+### Enhancements
+
+- Profiling: improve performance by subscribing only to necessary CLR events ([#3970](https://github.com/getsentry/sentry-dotnet/pull/3970))
+
 ## 5.1.0
 
 ### Significant change in behavior