Another fix to Quarantine Gate Keeper Conversation

There's still one error left to be fixed:

Traceback (most recent call last):
File "scripts/commands/npcconversationstop.py", line 8, in run
core.conversationService.handleEndConversation(actor,
actor.getConversingNpc())
File "scripts/conversation/outbreak_imperial_officer_gate_keeper.py",
line 29
convSvc.sendConversationOptions(actor, npc, options, handleOptionsTwo)
^
SyntaxError: no viable alternative at input 'convSvc'