update CHANGELOG.md

Author: herin049

CHANGELOG.md

@@ -26,7 +26,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   ([#4973](https://github.com/open-telemetry/opentelemetry-python/pull/4973))
 - `opentelemetry-exporter-prometheus`: Fix metric name prefix
   ([#4895](https://github.com/open-telemetry/opentelemetry-python/pull/4895))
-- `opentelemetry-api`: Add deepcopy support for `BoundedAttributes`
+- `opentelemetry-api`, `opentelemetry-sdk`: Add deepcopy support for `BoundedAttributes`
   ([#4934](https://github.com/open-telemetry/opentelemetry-python/pull/4934))
 
 ## Version 1.40.0/0.61b0 (2026-03-04)