Update socks5-impl requirement from 0.7 to 0.8 (#9)

Author: dependabot[bot]

Cargo.toml

@@ -70,7 +70,7 @@ regex = { version = "1.10", optional = true }
 serde = { version = "1.0", optional = true }
 serde_derive = { version = "1.0", optional = true }
 serde_json = { version = "1.0", optional = true }
-socks5-impl = { version = "0.7", default-features = false, features = [
+socks5-impl = { version = "0.8", default-features = false, features = [
     "client",
     "server",
 ], optional = true }