chore: update changelog

Author: smoke

CHANGELOG.md

@@ -16,6 +16,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - `opentelemetry-resource-detector-containerid`: make it more quiet on platforms without cgroups
   ([#3579](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/3579))
 
+### Added
+
+- `opentelemetry-instrumentation-pymongo` `aggregate` and `getMore` capture statements support
+  ([#3601](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/3601))
+
 ## Version 1.34.0/0.55b0 (2025-06-04)
 
 ### Fixed