sandbox: Disable Landlock due to qssb.h issue #19

sandbox/sandbox-linux.cpp

@@ -12,6 +12,7 @@
 #include <filesystem>
 #include <sys/mount.h>
 #include <sys/capability.h>
+#define HAVE_LANDLOCK 0
 #include <qssb.h>
 #include "../logger.h"
 #include "../utils.h"