Bump socket2 dependency to a version that does not assume memory layout

rust-lang/socket2#120

Author: faern

Cargo.toml

@@ -19,7 +19,7 @@ default-target = "x86_64-pc-windows-msvc"
 targets = ["aarch64-pc-windows-msvc", "i686-pc-windows-msvc", "x86_64-pc-windows-msvc"]
 
 [dependencies]
-socket2 = "0.3"
+socket2 = "0.3.16"
 
 [dependencies.winapi]
 version = "0.3.3"