update changelog before release

Author: crodriguezvega

modules/light-clients/08-wasm/CHANGELOG.md

@@ -34,7 +34,8 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 # Changelog
 
-## [[Unreleased]]
+<!-- markdown-link-check-disable-next-line -->
+## [v0.3.0+ibc-go-v8.3-wasmvm-v2.0](https://github.com/cosmos/ibc-go/releases/tag/modules%2Flight-clients%2F08-wasm%2Fv0.3.0%2Bibc-go-v8.3-wasmvm-v2.0) - 2024-07-17
 
 ### Dependencies
 
@@ -44,8 +45,6 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 * [\#6644](https://github.com/cosmos/ibc-go/pull/6644) Add `v2.MerklePath` for contract api `VerifyMembershipMsg` and `VerifyNonMembershipMsg` structs. Note, this requires a migration for existing client contracts to correctly handle deserialization of `MerklePath.KeyPath` which has changed from `[]string` to `[][]bytes`. In JSON message structures this change is reflected as the `KeyPath` being a marshalled as a list of base64 encoded byte strings. This change supports proving values stored under keys which contain non-utf8 encoded symbols. See migration docs for more details.
 
-### State Machine Breaking
-
 ### Improvements
 
 * [\#5923](https://github.com/cosmos/ibc-go/pull/5923) imp: add 08-wasm build opts for libwasmvm linking disabled