fix: support Qt 6.10 and Debian changelog

debian/changelog

@@ -2,4 +2,4 @@ cutefish-qt-plugins (0.6) UNRELEASED; urgency=high
 
   * Initial release (CutefishOS)  <support@cutefishos.com>
 
- -- CutefishOS Packaging Team <support@cutefishos.com> Sun, 21 Nov 2021 13:52:29 +0800
+ -- CutefishOS Packaging Team <support@cutefishos.com>  Sun, 21 Nov 2021 13:52:29 +0800

platformtheme/platformtheme.h

@@ -1,7 +1,13 @@
 #ifndef PLATFORMTHEME_H
 #define PLATFORMTHEME_H
 
+#include <QtGlobal>
+
+#if QT_VERSION >= QT_VERSION_CHECK(6, 10, 0)
+#include <private/qgenericunixtheme_p.h>
+#else
 #include <private/qgenericunixthemes_p.h>
+#endif
 #include "hintsettings.h"
 #include "systemtrayicon.h"