Upgrade codebase to CosmJS 0.29 and adapt code

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🦋 Changeset detected

Latest commit: 71f5c649a53dafc64427e89b4590dbbdf46624ba

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

| Name | Type | | --------------- | ----- | | @confio/relayer | Minor |

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