Update CHANGELOG

Author: SeanHood

CHANGELOG.md

@@ -26,6 +26,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   ([#3432](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/3432))
 - `opentelemetry-instrumentation-grpc` Check for None result in gRPC
   ([#3380](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/3381))
+- `opentelemetry-resource-detector-container` Correctly parse container id when using systemd and cgroupsv1
+  ([#3429](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/3429))
+
 
 ## Version 1.32.0/0.53b0 (2025-04-10)