Update dependency com.sk89q.worldguard:worldguard-bukkit to v7.0.15

Author: renovate[bot]

build.gradle

@@ -47,7 +47,7 @@ dependencies {
     compileOnly 'org.spigotmc:spigot-api:1.13.2-R0.1-SNAPSHOT'
     compileOnly 'com.fastasyncworldedit:FastAsyncWorldEdit-Core:2.6.2'
     compileOnly 'com.fastasyncworldedit:FastAsyncWorldEdit-Bukkit:2.6.3'
-    compileOnly 'com.sk89q.worldguard:worldguard-bukkit:7.0.8'
+    compileOnly 'com.sk89q.worldguard:worldguard-bukkit:7.0.15'
     compileOnly 'com.grinderwolf:slimeworldmanager-api:2.7.0-SNAPSHOT'
     compileOnly 'com.github.MilkBowl:VaultAPI:1.7.1'
     compileOnly 'com.mojang:authlib:1.11'