Update plugin org.sonarqube to v6.3.1.5724 (#717)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

build.gradle

@@ -4,7 +4,7 @@ plugins {
   id 'io.spring.dependency-management' version '1.1.7'
   id 'org.springframework.boot' version '3.5.5'
   id 'com.github.ben-manes.versions' version '0.52.0'
-  id 'org.sonarqube' version '6.2.0.5505'
+  id 'org.sonarqube' version '6.3.1.5724'
   /*
     Applies analysis tools including checkstyle and OWASP Dependency checker.
     See https://github.com/hmcts/gradle-java-plugin