add 1.21.3 and 1.21.4 to supported versions

Author: rfresh2

gradle.properties

@@ -3,6 +3,6 @@ org.gradle.jvmargs=-Xmx1G
 
 #properties
 minecraft_version = 1.20.4
-mod_version = 1.9
+mod_version = 1.10
 maven_group = ct
 archives_base_name = ContainerTweaks-rusherhack

src/main/resources/rusherhack-plugin.json

@@ -12,6 +12,9 @@
     "1.20.4",
     "1.20.6",
     "1.21",
-    "1.21.1"
+    "1.21.1",
+    "1.21.2",
+    "1.21.3",
+    "1.21.4"
   ]
 }