CGV-2733: Changed content data encoding to UTF-8

- ASCII was not working with some body JSON. With UTF8 all request works.

Sources/NWHttpConnection/Domain/NWHttpConnection.swift

@@ -144,7 +144,7 @@ internal extension NWHttpConnection {
         }
 
         connection.send(
-            content: content.data(using: .ascii),
+            content: content.data(using: .utf8),
             contentContext: .defaultMessage,
             isComplete: true,
             completion: NWConnection.SendCompletion.contentProcessed(