Update OTel Autoconfigure change log (Azure#43983)

Author: jeanbisutti

sdk/monitor/azure-monitor-opentelemetry-autoconfigure/CHANGELOG.md

@@ -1,14 +1,9 @@
 # Release History
 
-## 1.0.0-beta.2 (Unreleased)
-
-### Features Added
-
-### Breaking Changes
-
-### Bugs Fixed
+## 1.0.0-beta.2 (2025-01-31)
 
 ### Other Changes
+- [Update OpenTelemetry SDK to 1.46.0](https://github.com/Azure/azure-sdk-for-java/pull/43974)
 
 ## 1.0.0-beta.1 (2025-01-16)