The slow tests have timed out at least a couple of times,
so add a multiplier
1252/1633 systemd:libsystemd / test-sd-device TIMEOUT 30.04s killed by signal 15 SIGTERM
1633/1633 systemd:libsystemd / test-journal-verify TIMEOUT 90.01s killed by signal 15 SIGTERM
Follow-up for 8a1d134144