Add CHANGELOG

Author: xrmx

CHANGELOG.md

@@ -14,6 +14,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   and [#4535](https://github.com/open-telemetry/opentelemetry-python/pull/4535)).
 - Remove log messages from `BatchLogRecordProcessor.emit`, this caused the program
   to crash at shutdown with a max recursion error ([#4586](https://github.com/open-telemetry/opentelemetry-python/pull/4586)).
+- opentelemetry-api: allow importlib-metadata 8.7.0
+  ([#4593](https://github.com/open-telemetry/opentelemetry-python/pull/4593))
 
 ## Version 1.33.0/0.54b0 (2025-05-09)