Suppress deprecation warning from LettuceConnectionFactory

See gh-9538

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/data/redis/LettuceConnectionConfiguration.java

@@ -90,6 +90,7 @@ class LettuceConnectionConfiguration extends RedisConnectionConfiguration {
 						this.properties.getLettuce().getPool(), clientResources)));
 	}
 
+	@SuppressWarnings("deprecation")
 	private LettuceConnectionFactory applyProperties(
 			LettuceConnectionFactory connectionFactory) {
 		connectionFactory