docs: add ibc migration docs in migration docs (cosmos#10438) (cosmos…

…#10440)

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## Description

Closes: cosmos#10398

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- [ ] included the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] added `!` to the type prefix if API or client breaking change
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- [ ] added a changelog entry to `CHANGELOG.md`
- [ ] included comments for [documenting Go code](https://blog.golang.org/godoc)
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(cherry picked from commit d6699ed)

Co-authored-by: atheeshp <[email protected]>

docs/migrations/chain-upgrade-guide-044.md

@@ -18,6 +18,8 @@ You must upgrade to Stargate v0.42 before upgrading to v0.44. If you have not do
 
 Cosmos SDK v0.44 introduces a new way of handling chain upgrades that no longer requires exporting state to JSON, making the necessary changes, and then creating a new chain with the modified JSON as the new genesis file.
 
+The IBC module for the Cosmos SDK has moved to its [own repository](https://github.com/cosmos/ibc-go) for v0.42 and later versions. If you are using IBC, make sure to also go through the [IBC migration docs](https://github.com/cosmos/ibc-go/blob/main/docs/migrations/ibc-migration-043.md).
+
 Instead of starting a new chain, the upgrade binary will read the existing database and perform in-place store migrations. This new way of handling chain upgrades can be used alongside [Cosmovisor](../run-node/cosmovisor.html) to make the upgrade process seamless.
 
 ## In-Place Store Migrations