CLSA-2023-1688678794 Fix CVE(s): CVE-2023-26604

SECURITY UPDATE: local privilege escalation for some Sudo configurations - debian/patches/CVE-2023-26604.patch: set LESSSECURE to 1 - CVE-2023-26604 test issue: udev-test.pl is stopped by a timeout in a virtual environment - debian/patches/fix-udev-test.patch: skip this test in some cases...