So basically it's moving il_dcl_field_prop to il_dcl_field_prop_b so it can change the structure of the database, and it's getting stuck because for some reason it maintained il_dcl_field_prop when it created il_dcl_field_prop_b
Since it's empty, you could just drop both of those _b tables and let it try and move it again
EG:
DROP TABLE il_dcl_field_prop_b;
DROP TABLE il_dcl_field_prop_s_b;
and then run the update again. You have the create tables for those up above to there's no risk in doing so.
Let me know if that works!