fix(deps): update rust crate tokio to 1.17

Author: renovate-bot

Diff for: Cargo.toml

@@ -48,7 +48,7 @@ tower-service = "0.3.1"
 tower-layer = "0.3.1"
 tower-http = { version = "0.1.2", features = ["auth", "trace"] }
 
-tokio = { version = "1.14", default-features = false, features = ["net"], optional = true }
+tokio = { version = "1.17", default-features = false, features = ["net"], optional = true }
 
 [dev-dependencies]
 tokio = { version = "1", features = ["rt-multi-thread", "macros"] }