Update Minestom to 1.21.8

Author: FluxCapacitor2

gradle/libs.versions.toml

@@ -2,7 +2,7 @@ metadata.format.version = "1.1"
 
 [versions]
 kotlin = "2.1.10"
-minestom = "2025.07.10b-1.21.7"
+minestom = "2025.07.27-1.21.8"
 configurate = "4.2.0"
 minimessage = "4.19.0"
 kmongo = "5.2.1"