Upgrade dependency versions

Cargo.toml

@@ -16,17 +16,17 @@ default = ["tls"]
 tls = ["native-tls"]
 
 [dependencies]
-base64 = "0.9.0"
-byteorder = "1.1.0"
-bytes = "0.4.6"
-httparse = "1.2.3"
+base64 = "0.9.2"
+byteorder = "1.2.3"
+bytes = "0.4.8"
+httparse = "1.3.1"
 # Required until input_buffer has new version published with Debug derive fix present
 input_buffer = { git = "https://github.com/snapview/input_buffer" }
-log = "0.4.1"
-rand = "0.4.2"
+log = "0.4.2"
+rand = "0.5.2"
 sha1 = "0.4.0"
-url = "1.5.1"
-utf-8 = "0.7.1"
+url = "1.7.0"
+utf-8 = "0.7.2"
 
 [dependencies.native-tls]
 optional = true