Update changelog with changes to release

CHANGELOG.md

@@ -8,6 +8,8 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 
 ## [Unreleased]
 
+## [1.9.0/0.34.0/0.4.0] - 2022-08-02
+
 ### Added
 
 - The `TextMapPropagator` function to `go.opentelemetry.io/contrib/propagators/autoprop`.
@@ -530,7 +532,8 @@ First official tagged release of `contrib` repository.
 - Prefix support for dogstatsd (#34)
 - Update Go Runtime package to use batch observer (#44)
 
-[Unreleased]: https://github.com/open-telemetry/opentelemetry-go-contrib/compare/v1.8.0...HEAD
+[Unreleased]: https://github.com/open-telemetry/opentelemetry-go-contrib/compare/v1.9.0...HEAD
+[1.9.0/0.34.0/0.4.0]: https://github.com/open-telemetry/opentelemetry-go-contrib/releases/tag/v1.9.0
 [1.8.0/0.33.0]: https://github.com/open-telemetry/opentelemetry-go-contrib/releases/tag/v1.8.0
 [1.7.0/0.32.0]: https://github.com/open-telemetry/opentelemetry-go-contrib/releases/tag/v1.7.0
 [1.6.0/0.31.0]: https://github.com/open-telemetry/opentelemetry-go-contrib/releases/tag/v1.6.0