update changelog for v7.0.2 (#1475)

CHANGELOG.md

@@ -36,6 +36,8 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ## [Unreleased]
 
+## [v7.0.2] -2022-05-09
+
 * (gaia) bump [cosmos-sdk](https://github.com/cosmos/cosmos-sdk) to [v0.45.4](https://github.com/cosmos/cosmos-sdk/releases/tag/v0.45.4). See [CHANGELOG.md](https://github.com/cosmos/cosmos-sdk/blob/v0.45.4/CHANGELOG.md#v0454---2022-04-25) for details.
 * (gaia) [#1447](https://github.com/cosmos/gaia/pull/1447) Support custom message types to bypass minimum fee checks for.
   If a transaction contains only bypassed message types, the transaction will not have minimum fee
@@ -429,7 +431,8 @@ See the [Tendermint v0.34.7 SDK changelog](https://github.com/tendermint/tenderm
 
 <!-- Release links -->
 
-[Unreleased]: https://github.com/cosmos/gaia/compare/v7.0.2...HEAD
+[Unreleased]: https://github.com/cosmos/gaia/compare/v7.0.3...HEAD
+[v7.0.2]: https://github.com/cosmos/gaia/releases/tag/v7.0.2
 [v7.0.1]: https://github.com/cosmos/gaia/releases/tag/v7.0.1
 [v7.0.0]: https://github.com/cosmos/gaia/releases/tag/v7.0.0
 [v6.0.4]: https://github.com/cosmos/gaia/releases/tag/v6.0.4