Changes

jobs/ttcn3-ns-test{,-sns}: tweak timer

Since the timers were adjusted last time, ttcn3-ns-test{,-sns} started
failing every other day with:

  python3-osmopy-utils : Depends: osmocom-nightly (= 202411222026) but it is not going to be installed

The reason is that the binary packages are not ready yet at that time.
Run the jobs 1h later to avoid this.

Change-Id: I4f61013661d5de5382c3431650051989200fd785