Fix test checkstyle issues

Fix checkstyle issues from forward merge.

See gh-21022

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/endpoint/ExposeExcludePropertyEndpointFilterTests.java

@@ -148,7 +148,7 @@ class ExposeExcludePropertyEndpointFilterTests {
 	}
 
 	@Test // gh-20997
-	public void matchWhenDashInName() throws Exception {
+	void matchWhenDashInName() throws Exception {
 		setupFilter("bus-refresh", "");
 		assertThat(match(EndpointId.of("bus-refresh"))).isTrue();
 	}