api!: delete v1 merkle path and register v2 merkle path against inter…

…face on cdc (#6870)

* fix: register codec v2.MerklePath against path interface

* chore: delete merkle path v1

* docs: update migration doc for api removal

* chore: update changelog

* chore: make proto-swagger-gen

* Update 13-v8-to-v9.md

---------

Co-authored-by: Carlos Rodriguez <carlos@interchain.io>
Co-authored-by: colin axnér <25233464+colin-axner@users.noreply.github.com>

CHANGELOG.md

@@ -66,8 +66,8 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * (apps/transfer) [\#6440](https://github.com/cosmos/ibc-go/pull/6440) Remove `GetPrefixedDenom`.
 * (apps/transfer) [\#6508](https://github.com/cosmos/ibc-go/pull/6508) Remove the `DenomTrace` type.
 * (apps/27-interchain-accounts) [\#6598](https://github.com/cosmos/ibc-go/pull/6598) Mark the `requests` repeated field of `MsgModuleQuerySafe` non-nullable.
-* (23-commmitment) [\#6644](https://github.com/cosmos/ibc-go/pull/6644) Introduce commitment/v2 `MerklePath` to include `repeated bytes` in favour of `repeated string`. This supports using merkle path keys which include non UTF-8 encoded runes.
-* (23-commmitment) [\#6633](https://github.com/cosmos/ibc-go/pull/6633) MerklePath has been changed to use `repeated bytes` in favour of `repeated strings`.
+* (23-commmitment) [\#6644](https://github.com/cosmos/ibc-go/pull/6644) Introduce `commitment.v2.MerklePath` to include `repeated bytes` in favour of `repeated string`. This supports using merkle path keys which include non UTF-8 encoded runes.
+* (23-commmitment) [\#6870](https://github.com/cosmos/ibc-go/pull/6870) Remove `commitment.v1.MerklePath` in favour of `commitment.v2.MerklePath`.
 * (apps/27-interchain-accounts) [\#6749](https://github.com/cosmos/ibc-go/pull/6749) The ICA controller `NewIBCMiddleware` constructor function sets by default the auth module to nil.
 * (core, core/02-client) [\#6763](https://github.com/cosmos/ibc-go/pull/6763) Move prometheus metric labels for 02-client and core into a separate `metrics` package on core.
 * (core/02-client) [\#6777](https://github.com/cosmos/ibc-go/pull/6777) The `NewClientProposalHandler` of `02-client` has been removed.