Update plugin org.sonarqube to v7 (#1412)

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

Author: renovate[bot]

build.gradle

@@ -8,7 +8,7 @@ plugins {
     id 'info.solidsoft.pitest' version '1.15.0'
     id 'au.com.dius.pact' version '4.6.17'
     id 'net.serenity-bdd.serenity-gradle-plugin' version '4.2.34'
-    id 'org.sonarqube' version '6.3.1.5724'
+    id 'org.sonarqube' version '7.0.0.6105'
     id 'uk.gov.hmcts.java' version '0.12.67'
     id 'project-report'
     id 'jacoco'