Bump async-trait from 0.1.33 to 0.1.35 (#135)

bridges/relays/ethereum/Cargo.toml

@@ -8,7 +8,7 @@ edition = "2018"
 ansi_term = "0.12"
 async-std = "=1.5.0"
 async-stream = "0.2.0"
-async-trait = "0.1.33"
+async-trait = "0.1.35"
 clap = { version = "2.33.1", features = ["yaml"] }
 codec = { package = "parity-scale-codec", version = "1.0.0" }
 env_logger = "0.7.0"