Update yamux requirement from 0.8.0 to 0.9.0

Updates the requirements on [yamux](https://github.com/paritytech/yamux) to permit the latest version.
- [Release notes](https://github.com/paritytech/yamux/releases)
- [Changelog](https://github.com/paritytech/yamux/blob/develop/CHANGELOG.md)
- [Commits](https://github.com/paritytech/yamux/commits)

Signed-off-by: dependabot[bot] <support@github.com>

muxers/yamux/Cargo.toml

@@ -14,4 +14,4 @@ futures = "0.3.1"
 libp2p-core = { version = "0.28.0", path = "../../core" }
 parking_lot = "0.11"
 thiserror = "1.0"
-yamux = "0.8.1"
+yamux = "0.9.0"