Update 'NWWebSocket' to 0.3.0 in Package.swift

Author: danielrbrowne

Package.swift

@@ -10,7 +10,7 @@ let package = Package(
     ],
     dependencies: [
         .package(url: "https://github.com/ashleymills/Reachability.swift.git", .upToNextMajor(from: "5.0.0")),
-        .package(url: "https://github.com/pusher/NWWebSocket.git", .upToNextMajor(from: "0.2.1")),
+        .package(url: "https://github.com/pusher/NWWebSocket.git", .upToNextMajor(from: "0.3.0")),
     ],
     targets: [
         .target(