message: Make timeout_height non-optional
diff: @@ -357,10 +357,12 @@ export interface AminoMsgTransfer extends AminoMsg {
  /** Bech32 account address */
  readonly receiver: string;
  /**
  - * It is unclear if this is really optional. The Amino encoding expects unset values to be
  - * encoded as {}.
  + * The timeout as a (revision_number, revision_height) pair.
  + *
  + * This fied is is non-optional (https://github.com/cosmos/cosmos-sdk/blob/v0.42.7/x/ibc/applications/transfer/types/tx.pb.go#L49).
  + * In order to not set the timeout height, set it to {}.
  */
  - readonly timeout_height?: AminoHeight;
  + readonly timeout_height: AminoHeight;
  /**
  * Timeout timestamp (in nanoseconds). The timeout is disabled when set to 0.
  *
  