bump neo4j driver and move to maven repository

build.gradle

@@ -5,12 +5,12 @@ plugins {
 }
 
 repositories {
-    jcenter()
+    mavenCentral()
 }
 
 dependencies {
     testImplementation 'junit:junit:4.12'
-	implementation 'org.neo4j.driver:neo4j-java-driver:4.2.1'
+	implementation 'org.neo4j.driver:neo4j-java-driver:4.2.4'
     implementation 'com.google.code.gson:gson:2.8.6'
 }