Feb'19 - Update Spring dependencies

<sakai.spring.version>4.3.22.RELEASE</sakai.spring.version>
<sakai.spring.data.commons.version>1.13.18.RELEASE</sakai.spring.data.commons.version>
<sakai.spring.data.jpa.version>1.11.18.RELEASE</sakai.spring.data.jpa.version>
<sakai.spring.data.rest.version>2.6.18.RELEASE</sakai.spring.data.rest.version>
<sakai.spring.security.version>4.2.11.RELEASE</sakai.spring.security.version>
<sakai.spring.hateoas.version>0.25.1.RELEASE</sakai.spring.hateoas.version>
<sakai.spring.plugin.version>1.2.0.RELEASE</sakai.spring.plugin.version>
<sakai.spring.test.artifactId>spring-test</sakai.spring.test.artifactId>
<sakai.spring.test.version>4.3.22.RELEASE</sakai.spring.test.version>