Bump async-trait from 0.1.50 to 0.1.51 (#3721)

Bumps [async-trait](https://github.com/dtolnay/async-trait) from 0.1.50 to 0.1.51.
- [Release notes](https://github.com/dtolnay/async-trait/releases)
- [Commits](https://github.com/dtolnay/async-trait/compare/0.1.50...0.1.51)

---
updated-dependencies:
- dependency-name: async-trait
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

polkadot/node/subsystem-types/Cargo.toml

@@ -7,7 +7,7 @@ description = "Subsystem traits and message definitions"
 
 [dependencies]
 async-std = "1.8.0"
-async-trait = "0.1.42"
+async-trait = "0.1.51"
 derive_more = "0.99.11"
 futures = "0.3.12"
 futures-timer = "3.0.2"
@@ -32,6 +32,6 @@ log = "0.4.13"
 
 [dev-dependencies]
 assert_matches = "1.4.0"
-async-trait = "0.1.42"
+async-trait = "0.1.51"
 futures = { version = "0.3.12", features = ["thread-pool"] }
 polkadot-node-subsystem-test-helpers = { path = "../subsystem-test-helpers" }