cmake: Disable Qt 6.9-deprecated symbols

Author: lnjX

CMakeLists.txt

@@ -46,7 +46,7 @@ set(QXMPP_TARGET QXmppQt${QT_VERSION_MAJOR})
 set(QXMPPOMEMO_TARGET QXmppOmemoQt${QT_VERSION_MAJOR})
 
 add_definitions(
-    -DQT_DISABLE_DEPRECATED_BEFORE=0x050F00
+    -DQT_DISABLE_DEPRECATED_BEFORE=0x060900
     -DQT_NO_URL_CAST_FROM_STRING
     -DQT_NO_CAST_TO_ASCII
     -DQT_NO_CAST_FROM_BYTEARRAY