Update ibc-go from v2 to v5

[ryanchristo]

Summary

The next version of ibc-go that supports cosmos-sdk v0.46 will be ibc-go v5.0. There is a tracking issue and milestone for v5.0. We will be migrating from ibc-go v2.0, so we will need to follow the migration guide for each release since v2.0:

• https://github.com/cosmos/ibc-go/blob/main/docs/migrations/v2-to-v3.md
• https://github.com/cosmos/ibc-go/blob/main/docs/migrations/v3-to-v4.md
• [update link once available ] https://github.com/cosmos/ibc-go/pull/1826

Adding interchain accounts and the migrations to support interchain accounts can be addressed separately (#1328).

Follow-up

• bump IBC version to stable release(v5.0).
• Adding support for IBC fee module.

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