Add deprecated annotaiton so gradle stops complaining

core/src/main/java/org/geysermc/connector/network/session/auth/AuthData.java

@@ -33,6 +33,7 @@ import java.util.UUID;
  *
  * @deprecated legacy code
  */
+@Deprecated
 public class AuthData {
     private final org.geysermc.geyser.session.auth.AuthData handle;