Polish "Fix imports and annotations in JUnit5BadModifier"

See gh-176

Author: wilkinsona

spring-javaformat/spring-javaformat-checkstyle/src/test/resources/source/JUnit5BadModifier.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2019 the original author or authors.
+ * Copyright 2017-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -14,11 +14,11 @@
  * limitations under the License.
  */
 
-import org.junit.jupiter.api.Test;
-import org.junit.jupiter.api.BeforeAll;
-import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.AfterAll;
 import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.TestTemplate;
 
 /**