fix(deps): update rust crate cloudflare to 0.9.0

Author: renovate-bot

Cargo.lock

@@ -28,7 +28,7 @@ actix-web = "4.0.0-beta.13"
 async-trait = "0.1.51"
 bytes = "1.1.0"
 clap = "2.33.3"
-cloudflare = "0.8.7"
+cloudflare = "0.9.0"
 domain = { version = "0.6.1", features = ["master"] }
 env_logger = "0.9.0"
 lazy_static = "1.4.0"