Open Ports of the Caribbean - Update

A few scenario balancing updates:

• Balanced out the attack point (AP) requirements in events with duel mechanics. Two scenarios in the Chance Events file (Season 3/Scenario 2, and Season 4/Scenario 2) and one scenario in Global Events file (Season 01/Scenario 02) were affected. 
  
• Modified the reward for one Global Event (Option 2 in Chance Event Season 8/Scenario 6). Total gold increased from 12 gold to 20 gold.