chore(deps): update ibc-proto requirement from 0.42.2 to 0.43.0

Updates the requirements on [ibc-proto](https://github.com/cosmos/ibc-proto-rs) to permit the latest version.
- [Release notes](https://github.com/cosmos/ibc-proto-rs/releases)
- [Changelog](https://github.com/cosmos/ibc-proto-rs/blob/main/CHANGELOG.md)
- [Commits](cosmos/ibc-proto-rs@v0.42.2...v0.42.2)

---
updated-dependencies:
- dependency-name: ibc-proto
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Cargo.toml

@@ -102,7 +102,7 @@ ibc-client-wasm-types       = { version = "0.51.0", path = "./ibc-clients/ics08-
 ibc-app-transfer-types      = { version = "0.51.0", path = "./ibc-apps/ics20-transfer/types", default-features = false }
 ibc-app-nft-transfer-types  = { version = "0.51.0", path = "./ibc-apps/ics721-nft-transfer/types", default-features = false }
 
-ibc-proto = { version = "0.42.2", default-features = false }
+ibc-proto = { version = "0.43.0", default-features = false }
 
 # cosmos dependencies
 tendermint                       = { version = "0.34.0", default-features = false }