Mark Modrinth as 1.21.8 supported

Author: SamB440

combined/build.gradle.kts

@@ -34,6 +34,6 @@ modrinth {
         "1.18", "1.18.1", "1.18.2",
         "1.19", "1.19.1", "1.19.2", "1.19.3", "1.19.4",
         "1.20", "1.20.1", "1.20.2", "1.20.3", "1.20.4", "1.20.5", "1.20.6",
-        "1.21", "1.21.1", "1.21.2", "1.21.3", "1.21.4", "1.21.5", "1.21.6", "1.21.7")
+        "1.21", "1.21.1", "1.21.2", "1.21.3", "1.21.4", "1.21.5", "1.21.6", "1.21.7", "1.21.8")
     loaders.addAll("bukkit", "folia", "paper", "velocity")
 }