Bump assertj-core from 3.11.1 to 3.12.1 (#166)

* Bump assertj-core from 3.11.1 to 3.12.1

Bumps [assertj-core](https://github.com/joel-costigliola/assertj-core) from 3.11.1 to 3.12.1.
- [Release notes](https://github.com/joel-costigliola/assertj-core/releases)
- [Commits](https://github.com/joel-costigliola/assertj-core/compare/assertj-core-3.11.1...assertj-core-3.12.1)

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

* [changelog] updated

CHANGELOG.org

@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
    - Bump lombok from 1.18.4 to 1.18.6 (#165)
    - Bump spring-boot.version from 2.1.2.RELEASE to 2.1.3.RELEASE (#168)
+   - Bump assertj-core from 3.11.1 to 3.12.1 (#166)
 
 * [5.3.3] - 2019-02-02
 

builder/pom.xml

@@ -30,7 +30,7 @@
         <mapstream.version>3.1.12</mapstream.version>
         <map-builder.version>1.0.0</map-builder.version>
         <mockito.version>2.23.4</mockito.version>
-        <assertj.version>3.11.1</assertj.version>
+        <assertj.version>3.12.1</assertj.version>
         <conditional.version>0.7.0</conditional.version>
         <classgraph.version>4.6.29</classgraph.version>