message: Add CHANGELOG entry: Turn protobufjs into a devDependency
diff: @@ -6,6 +6,13 @@ and this project adheres to
  ## [Unreleased]
  +### Changed
  +
  +- @cosmjs/proto-signing, @cosmjs/cosmwasm-stargate: Turn `protobufjs` into a
  + devDependency ([#1166]).
  +
  +[#1166]: https://github.com/cosmos/cosmjs/pull/1166
  +
  ## [0.28.6] - 2022-06-08
  ## [0.28.5] - 2022-06-08
  