Upgrade PMD to 6.8.0

Author: jsotuyod

CHANGELOG.md

@@ -5,6 +5,7 @@
 
 Improvements:
  * Upgraded to Gradle 4.10.2
+ * Upgraded PMD to 6.8.0
  * All lint tasks (ie: lintDebug and lintRelease) are now cacheable and can be up-to-date
 
 ### 2.6.8

src/main/groovy/com/monits/gradle/sca/ToolVersions.groovy

@@ -22,7 +22,7 @@ import org.gradle.util.GradleVersion
 */
 @CompileStatic
 final class ToolVersions {
-    private final static String LATEST_PMD_TOOL_VERSION = '6.7.0'
+    private final static String LATEST_PMD_TOOL_VERSION = '6.8.0'
     private final static String BACKWARDS_PMD_TOOL_VERSION = '5.1.3'
     private final static GradleVersion GRADLE_VERSION_PMD = GradleVersion.version('2.4')