message: Add CHANGELOG entry for protoDecimalToJson fix
diff: @@ -6,6 +6,14 @@ and this project adheres to
  ## [Unreleased]
  +### Fixed
  +
  +- @cosmjs/stargate: Fix `protoDecimalToJson` for values with a 0 fractional
  + part, such as `0.000000000000000000`, `1.000000000000000000` or
  + `42.000000000000000000` ([#1326]).
  +
  +[#1326] : https://github.com/cosmos/cosmjs/pull/1326
  +
  ### Deprecated
  - @cosmjs/stargate: Deprecate `QueryClient.queryUnverified` in favour of newly
  