feat: add governance module special handling

[eloylp]

Describe the changes

Adds the the special handling logic so the relayer can execute it's amplifier api received tasks
against the gov module GMP processing logic.

Related Issue(s)

https://github.com/eigerco/axelar-relayer-core-internal/issues/28

Checklist

• Tests have been added/updated for the changes.
• Documentation has been updated for the changes (if applicable).
• The code follows Rust's style guidelines.

Additional Context
Had to update the axelar-solana-governance dep for getting the latest code.

[eloylp]

What would be the best way of testing this 🤔

[roberts-pumpurs]

We don't have any tests for this component. I am still working on adding tests to event ingestion, but the same approach can be done here. Link to my diff. But my code still depends on an unmerged branch. I will try finishing it today and this will unblock testing the evm->solana flow as well.

[roberts-pumpurs]

currently lgtm.
Feel free to merge, create a new issue for missing tests -- let's tackle that later

[eloylp]

currently lgtm.
Feel free to merge, create a new issue for missing test

Nice, i will create the issue thanks for review. Merging !