message: Add CHANGELOG entry for the fix
diff: @@ -6,6 +6,15 @@ and this project adheres to
  ## [Unreleased]
  +### Fixed
  +
  +- @cosmjs/cosmwasm-stargate, @cosmjs/stargate: Fix error propagation in
  + `CosmWasmClient.broadcastTx` and `StargateClient.broadcastTx` ([#800]). This
  + bug was introduced with the switch from broadcast mode "commit" to "sync" in
  + version 0.25.0.
  +
  +[#800]: https://github.com/cosmos/cosmjs/issues/800
  +
  ## [0.25.2] - 2021-05-11
  ### Added
  