Upgrade to Jackson 2.3.4

[wilkinsona]

[ralscha]

Hi

I'm wondering why not update to 2.4.2.

Spring 4.1 recently updated to 2.4.2: spring-projects/spring-framework@dd66ca0

[philwebb]

We try not to bump the minor version of dependencies until we also bump the Spring Boot version. So Spring Boot 1.1.x will stick to Jackson 2.3.x. Spring Boot 1.2.x will most likely use Jackson 2.4.x.

[ralscha]

Makes sense. Thanks for the clarification.

[wilkinsona]

@ralscha Boot's 1.2.0 snapshots (which use Spring 4.1) are already using Jackson 2.4.2