Polish "Add boundary tests for JsonValueWriter max nesting depth"

See gh-49662

Author: wilkinsona

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/json/JsonValueWriterTests.java

@@ -300,31 +300,25 @@ void illegalStateExceptionShouldBeThrownWhenIterableExceededNestingDepth() {
 	void shouldAllowStartingObjectWhenCurrentDepthIsMaxDepth() {
 		StringBuilder out = new StringBuilder();
 		JsonValueWriter writer = new JsonValueWriter(out, 2);
-
 		writer.start(Series.OBJECT);
 		writer.start(Series.OBJECT);
 		writer.start(Series.OBJECT);
-
 		writer.end(Series.OBJECT);
 		writer.end(Series.OBJECT);
 		writer.end(Series.OBJECT);
-
 		assertThat(out).hasToString("{{{}}}");
 	}
 
 	@Test
 	void shouldAllowStartingArrayWhenCurrentDepthIsMaxDepth() {
 		StringBuilder out = new StringBuilder();
 		JsonValueWriter writer = new JsonValueWriter(out, 2);
-
 		writer.start(Series.ARRAY);
 		writer.start(Series.ARRAY);
 		writer.start(Series.ARRAY);
-
 		writer.end(Series.ARRAY);
 		writer.end(Series.ARRAY);
 		writer.end(Series.ARRAY);
-
 		assertThat(out).hasToString("[[[]]]");
 	}