DummyPlayer: make method interface match ABC
DummyPlayer: make method interface match ABC

Fixes the phpstan warning:

> Method DummyPlayer::getShip() overrides method AbstractSmrPlayer::getShip() but misses parameter #1 $forceUpdate.

hemberger/smr,hemberger/smr,hemberger/smr,smrealms/smr,smrealms/smr,smrealms/smr,hemberger/smr