Update winapi requirement from ^0.2 to ^0.3

Updates the requirements on [winapi](https://github.com/retep998/winapi-rs) to permit the latest version.
- [Release notes](https://github.com/retep998/winapi-rs/releases)
- [Commits](https://github.com/retep998/winapi-rs/commits/0.3.6)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot-support

Cargo.toml

@@ -14,7 +14,7 @@ license = "MIT"
 # sctp-sys = { git = "https://github.com/phsym/sctp-sys" }
 sctp-sys = "0.0.7"
 libc = "^0.2"
-winapi = "^0.2"
+winapi = "^0.3"
 ws2_32-sys = "^0.2"
 
 [lib]