chore: update changelog

Author: damiannolan

CHANGELOG.md

@@ -38,7 +38,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ### Dependencies
 
-* [\#6193](https://github.com/cosmos/ibc-go/pull/6193) Bump Cosmos SDK to v0.50.7.
+* [\#6828](https://github.com/cosmos/ibc-go/pull/6828) Bump Cosmos SDK to v0.50.8.
 * [\#6193](https://github.com/cosmos/ibc-go/pull/6193) Bump `cosmossdk.io/store` to v1.1.0.
 * [\#6737](https://github.com/cosmos/ibc-go/pull/6737) Bump CometBFT to v0.38.9.
 * [\#6380](https://github.com/cosmos/ibc-go/pull/6380) Bump go to v1.22.