Fix build with Qt 6

Change-Id: I67ffc389d7579ac98755ec99614ce9b3e4e07df5
Reviewed-by: Mahmoud Badri <mahmoud.badri@qt.io>
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>

src/libs/sqlite/utf8string.h

@@ -268,6 +268,13 @@ public:
         return second == first;
     }
 
+    friend bool operator!=(const Utf8String &first, const char *second)
+    {
+        return first.byteArray != second;
+    }
+
+    friend bool operator!=(const char *first, const Utf8String &second) { return second != first; }
+
     friend bool operator==(const Utf8String &first, const QString &second)
     {
         return first.byteArray == second.toUtf8();