Edit /etc/zypp/zypp.conf so that the following line reads, for instance:
multiversion.kernels = latest,latest-1,latest-2,running,oldest
instead of “oldest” you can also write the exact version you want to keep, I think it is 6.13.8-1.1
BTW, there is another user here possibly having trouble with G05 driver and 6.14.2 kernel.