Bump assertj-core from 3.12.0 to 3.12.1 in /modules/neo4j (#1286)

Bumps [assertj-core](https://github.com/joel-costigliola/assertj-core) from 3.12.0 to 3.12.1.
<details>
<summary>Commits</summary>

- [`8cc755f`](assertj/assertj@8cc755f) [maven-release-plugin] prepare release assertj-core-3.12.1
- [`14384ec`](assertj/assertj@14384ec) Avoid generating a module-info class. Fixes [#1448](https://github-redirect.dependabot.com/joel-costigliola/assertj-core/issues/1448)
- [`fb75625`](assertj/assertj@fb75625) anySatisfy: do not continue evaluating elements once we found a match
- [`c8a6798`](assertj/assertj@c8a6798) fix a minor typo ([#1449](https://github-redirect.dependabot.com/joel-costigliola/assertj-core/issues/1449))
- [`4e32776`](assertj/assertj@4e32776) Fail with error message if the given expectedStringTemplate is null ([#1450](https://github-redirect.dependabot.com/joel-costigliola/assertj-core/issues/1450))
- [`2cba38f`](assertj/assertj@2cba38f) fix some more javadoc errors ([#1447](https://github-redirect.dependabot.com/joel-costigliola/assertj-core/issues/1447))
- [`50e2e3a`](assertj/assertj@50e2e3a) Use String#join where possible
- [`fa94bf2`](assertj/assertj@fa94bf2) Javadoc fixes ([#1444](https://github-redirect.dependabot.com/joel-costigliola/assertj-core/issues/1444))
- [`e3c2a57`](assertj/assertj@e3c2a57) Update Memory File System to 2.1.0
- [`2c57b2b`](assertj/assertj@2c57b2b) Fix javadoc and reenable Javadoc doclint verification ([#1438](https://github-redirect.dependabot.com/joel-costigliola/assertj-core/issues/1438))
- Additional commits viewable in [compare view](assertj/assertj@assertj-core-3.12.0...assertj-core-3.12.1)
</details>
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modules/neo4j/build.gradle

@@ -30,5 +30,5 @@ dependencies {
     compile project(":testcontainers")
 
     testCompile "org.neo4j.driver:neo4j-java-driver:1.7.2"
-    testCompile 'org.assertj:assertj-core:3.12.0'
+    testCompile 'org.assertj:assertj-core:3.12.1'
 }