Bump derive_more from 0.99.8 to 0.99.9 (#152)

bridges/relays/substrate/Cargo.toml

@@ -8,7 +8,7 @@ edition = "2018"
 async-std = "=1.5.0"
 clap = "2.33.1"
 ctrlc = "3.1.4"
-derive_more = "0.99.8"
+derive_more = "0.99.9"
 env_logger = "0.7.1"
 futures = "0.3.5"
 jsonrpsee = { git = "https://github.com/paritytech/jsonrpsee", features = ["ws"] }