Remove version for spring-boot-jackson2 dependency

Removed version specification for spring-boot-jackson2 dependency.

Author: thomasturrell

pom.xml

@@ -282,7 +282,6 @@
       <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-jackson2</artifactId>
-        <version>4.0.0</version>
       </dependency>
       <dependency>
         <groupId>dev.learning.xapi</groupId>