Update plugin version

Author: LucidAPs

advanced-achievements-plugin/src/main/resources/plugin.yml

@@ -1,6 +1,6 @@
 name: AdvancedAchievements
 main: com.hm.achievement.AdvancedAchievements
-version: 9.3
+version: 9.4
 author: LucidAPs
 softdepend: [Vault,PetMaster,Essentials,PlaceholderAPI,Jobs]
 description: Advanced Achievements enables unique and challenging achievements. Try to collect as many as you can, earn rewards, climb the rankings and receive RP books!