Bump async-trait from 0.1.63 to 0.1.64

Bumps [async-trait](https://github.com/dtolnay/async-trait) from 0.1.63 to 0.1.64.
- [Release notes](https://github.com/dtolnay/async-trait/releases)
- [Commits](https://github.com/dtolnay/async-trait/compare/0.1.63...0.1.64)

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

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

bridges/relays/parachains/Cargo.toml

@@ -7,7 +7,7 @@ license = "GPL-3.0-or-later WITH Classpath-exception-2.0"
 
 [dependencies]
 async-std = "1.6.5"
-async-trait = "0.1.63"
+async-trait = "0.1.64"
 futures = "0.3.26"
 log = "0.4.17"
 relay-utils = { path = "../utils" }