message: Move checked_mul/checked_pow CHANGELOG entry to Unreleased [skip ci]
diff: @@ -6,13 +6,16 @@ and this project adheres to
  ## [Unreleased]
  +### Added
  +
  +- cosmwasm-std: Implement `Decimal{,256}::checked_mul` and
  + `Decimal{,256}::checked_pow`.
  +
  ## [1.0.0-beta6] - 2022-03-07
  ### Added
  - cosmwasm-std: Implement `ops::Rem` for `Uint{64,128,256,512}`.
  -- cosmwasm-std: Implement `Decimal{,256}::checked_mul` and
  - `Decimal{,256}::checked_pow`.
  ### Changed
  