Update copyright year of changed files

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/redis/RedisHealth.java

@@ -28,7 +28,10 @@ import org.springframework.data.redis.connection.ClusterInfo;
  *
  * @author Phillip Webb
  */
-class RedisHealth {
+final class RedisHealth {
+
+	private RedisHealth() {
+	}
 
 	static Builder up(Health.Builder builder, Properties info) {
 		builder.withDetail("version", info.getProperty("redis_version"));

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/redis/RedisReactiveHealthIndicator.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.