NetworkExtension macOS xcode15.0 b5

#NetworkExtension.framework https://github.com/xamarin/xamarin-macios/pull/19059

diff -ruN /Applications/Xcode_15.0.0-beta4.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/NetworkExtension.framework/Headers/NERelay.h /Applications/Xcode_15.0.0-beta5.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/NetworkExtension.framework/Headers/NERelay.h
--- /Applications/Xcode_15.0.0-beta4.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/NetworkExtension.framework/Headers/NERelay.h	2023-06-30 01:49:29
+++ /Applications/Xcode_15.0.0-beta5.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/NetworkExtension.framework/Headers/NERelay.h	2023-07-20 00:18:15
@@ -35,6 +35,12 @@
 @property (copy, nullable) NSURL *HTTP2RelayURL;
 
 /*!
+ * @property dnsOverHTTPSURL
+ * @discussion The URL of a DNS-over-HTTPS (DoH) resolver accessible via the relay.
+ */
+@property (copy, nullable) NSURL *dnsOverHTTPSURL;
+
+/*!
  * @property additionalHTTPHeaderFields
  * @discussion Additional HTTP header field names and values to be added to all relay requests.
  */