Add changelog

Author: xrmx

CHANGELOG.md

@@ -9,6 +9,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Tolerates exceptions when loading resource detectors via `OTEL_EXPERIMENTAL_RESOURCE_DETECTORS`
   ([#4373](https://github.com/open-telemetry/opentelemetry-python/pull/4373))
+- opentelemetry-sdk: fix OTLP exporting of Histograms withs explicit buckets advisory
+  ([#4434](https://github.com/open-telemetry/opentelemetry-python/pull/4434))
 
 ## Version 1.30.0/0.51b0 (2025-02-03)