cargo: update private dependencies

Cargo.toml

@@ -14,9 +14,9 @@ categories = ["web-programming", "api-bindings"]
 
 [dependencies]
 hyper = { version = "~0.10", default-features = false }
-itertools = "~0.5"
+itertools = "~0.6"
 log = "~0.3"
-reqwest = "~0.4"
+reqwest = "~0.6"
 serde_derive = "^1.0"
 url = "^1.4"