Bump neo4j-java-driver from 1.7.3 to 1.7.4 in /modules/neo4j

Bumps [neo4j-java-driver](https://github.com/neo4j/neo4j-java-driver) from 1.7.3 to 1.7.4.
- [Release notes](https://github.com/neo4j/neo4j-java-driver/releases)
- [Commits](neo4j/neo4j-java-driver@1.7.3...1.7.4)

Signed-off-by: dependabot[bot] <support@dependabot.com>

modules/neo4j/build.gradle

@@ -29,6 +29,6 @@ dependencies {
 
     compile project(":testcontainers")
 
-    testCompile "org.neo4j.driver:neo4j-java-driver:1.7.3"
+    testCompile "org.neo4j.driver:neo4j-java-driver:1.7.4"
     testCompile 'org.assertj:assertj-core:3.12.2'
 }