add changelog

Author: lalitb

opentelemetry-sdk/CHANGELOG.md

@@ -11,6 +11,12 @@
   - `ResourceDetector.detect()` no longer supports timeout option.
   - `opentelemetry::global::shutdown_tracer_provider()` Removed from the API, should now use `tracer_provider.shutdown()` see [#2369](https://github.com/open-telemetry/opentelemetry-rust/pull/2369) for a migration example. "Tracer provider" is cheaply cloneable, so users are encouraged to set a clone of it as the global (ex: `global::set_tracer_provider(provider.clone()))`, so that instrumentations and other components can obtain tracers from `global::tracer()`. The tracer_provider must be kept around to call shutdown on it at the end of application (ex: `tracer_provider.shutdown()`)
 
+- *Breaking* : [#2314](https://github.com/open-telemetry/opentelemetry-rust/pull/2314)
+  - The LogRecord struct has been updated:
+    - All fields are now pub(crate) instead of pub.
+    - Getter methods have been introduced to access field values.
+    This change impacts custom exporter developers by requiring updates to code that directly accessed LogRecord fields. Exporters must now use the provided getter methods (e.g., `log_record.event_name()` instead of `log_record.event_name`).
+
 ## 0.27.1
 
 Released 2024-Nov-27