[S1.OSV.update] start searching for RES files from last local POE date
[S1.OSV.update] start searching for RES files from last local POE date

used to be from last local RES date, which invokes very long unnecessary
search if RES files haven't been downloaded for a long time anymore.

johntruckenbrodt/pyroSAR,johntruckenbrodt/pyroSAR