Update FAWE to v2.15.1

Author: renovate[bot]

settings.gradle.kts

@@ -91,7 +91,7 @@ dependencyResolutionManagement {
 
             // world edit
             library("worldedit", "com.sk89q.worldedit:worldedit-bukkit:7.3.10")
-            version("fawe", "2.12.3")
+            version("fawe", "2.15.1")
             library("fawe-core", "com.fastasyncworldedit", "FastAsyncWorldEdit-Core").versionRef("fawe")
             library("fawe-bukkit", "com.fastasyncworldedit", "FastAsyncWorldEdit-Bukkit").versionRef("fawe")