Update CHANGELOG

Author: rads-1996

CHANGELOG.md

@@ -13,6 +13,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## Unreleased
 
 - opentelemetry-sdk: Added request filter which fixes invalid type at WSGI request headers and attributes
+  ([#4808](https://github.com/open-telemetry/opentelemetry-python/pull/4808))
 - docs: Added sqlcommenter example
   ([#4734](https://github.com/open-telemetry/opentelemetry-python/pull/4734))
 - build: bump ruff to 0.14.1