jenkins-common: use debian 13 by defaultThe testsuites were still using debian 12, switch to the current stableversion (13).This also gives us a much newer bpftrace version:* Debian 12: 0.17.0-1* Debian 13: 0.23.2-1Change-Id: I231e1e93724faf6d659132be9b9d0e164502bf95