Update the driver version to 4.0

Author: sherfert

build.gradle

@@ -70,7 +70,7 @@ ext {
     argparse4jVersion = '0.7.0'
     junitVersion = '4.12'
     evaluatorVersion = '3.5.4'
-    neo4jJavaDriverVersion = '4.0.0-rc2'
+    neo4jJavaDriverVersion = '4.0.0'
     findbugsVersion = '3.0.0'
     jansiVersion = '1.13'
     jlineVersion = '2.14.6'