Update plugin org.sonarqube to v6.3.0.5676 (#688)

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

Author: renovate[bot]

build.gradle

@@ -8,7 +8,7 @@ plugins {
     id 'org.owasp.dependencycheck' version '12.1.3'
     id 'se.patrikerdes.use-latest-versions' version '0.2.19'
     id 'com.github.ben-manes.versions' version '0.51.0'
-    id 'org.sonarqube' version '6.2.0.5505'
+    id 'org.sonarqube' version '6.3.0.5676'
     id 'jacoco'
     id "com.github.kt3k.coveralls" version "2.12.2"
     id 'com.github.spacialcircumstances.gradle-cucumber-reporting' version '0.1.25'