Javadoc suggests Jackson 2.9

Issue: SPR-14925

spring-web/src/main/java/org/springframework/http/converter/cbor/MappingJackson2CborHttpMessageConverter.java

@@ -35,7 +35,7 @@ import org.springframework.util.Assert;
  *
  * <p>The default constructor uses the default configuration provided by {@link Jackson2ObjectMapperBuilder}.
  *
- * <p>Compatible with Jackson 2.6 and higher.
+ * <p>Compatible with Jackson 2.9 and higher.
  *
  * @author Sebastien Deleuze
  * @since 5.0

spring-web/src/main/java/org/springframework/http/converter/json/MappingJackson2HttpMessageConverter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2016 the original author or authors.
+ * Copyright 2002-2017 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.
@@ -35,7 +35,7 @@ import org.springframework.http.MediaType;
  *
  * <p>The default constructor uses the default configuration provided by {@link Jackson2ObjectMapperBuilder}.
  *
- * <p>Compatible with Jackson 2.6 and higher, as of Spring 4.3.
+ * <p>Compatible with Jackson 2.9 and higher, as of Spring 5.0.
  *
  * @author Arjen Poutsma
  * @author Keith Donald

spring-web/src/main/java/org/springframework/http/converter/smile/MappingJackson2SmileHttpMessageConverter.java

@@ -35,7 +35,7 @@ import org.springframework.util.Assert;
  *
  * <p>The default constructor uses the default configuration provided by {@link Jackson2ObjectMapperBuilder}.
  *
- * <p>Compatible with Jackson 2.6 and higher.
+ * <p>Compatible with Jackson 2.9 and higher.
  *
  * @author Sebastien Deleuze
  * @since 5.0

spring-web/src/main/java/org/springframework/http/converter/xml/MappingJackson2XmlHttpMessageConverter.java

@@ -35,7 +35,7 @@ import org.springframework.util.Assert;
  *
  * <p>The default constructor uses the default configuration provided by {@link Jackson2ObjectMapperBuilder}.
  *
- * <p>Compatible with Jackson 2.6 and higher, as of Spring 4.3.
+ * <p>Compatible with Jackson 2.9 and higher, as of Spring 5.0.
  *
  * @author Sebastien Deleuze
  * @since 4.1