Closes https://github.com/paritytech/polkadot-sdk/issues/5566

Publish the `polkadot-omni-node` binary

This is a best effort. I'm not very familiar with the release /
publishing process and also not sure how to test this.
@paritytech/release-engineering can you take a look on this PR please ?

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Co-authored-by: EgorPopelyaev <egor@parity.io>