Merge pull request #897 from pietro-lopes/registry-scanner

restrict scanning fields to static only

src/main/java/dev/latvian/mods/kubejs/registry/RegistryType.java

@@ -131,7 +131,7 @@ private static void processClass(Stream<Class<?>> classStream) {
 				.flatMap(Stream::of)
 				.forEach(field -> {
 					try {
-						if (!VALID_TYPES.get().contains(field.getType())) {
+						if (!VALID_TYPES.get().contains(field.getType()) || !Modifier.isStatic(field.getModifiers())) {
 							return;
 						}