Format StringUtilsTest

util/src/test/java/dev/openrs2/util/StringUtilsTest.java

@@ -1,6 +1,7 @@
 package dev.openrs2.util;
 
 import org.junit.jupiter.api.Test;
+
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertThrows;