feat(ts-sdk): cw20 increase allowance (#3665)

~We can confirm cw20 increase allowance works by calling
[`queryContractState`](https://github.com/unionlabs/union/pull/3665/files#diff-2c85a1ea1ce546d8f4f3a4e12ed73a56ade8759d8df4c263c0cdf5d7f48eda05R73-R104)
and seeing `allowance` and `allowance_spender` updating.~

~However, we can't merge this yet due to a pubkey decoding issue with
`cosmjs`:~

~This is fixable by updating our `cosmjs` patch. Once we do that we can
then merge this~

proper patch has been applied to cosmjs. This PR is ready. The other
updates in this PR are due to build step not working, so they were
needed to make `bun run build` work.