chore(deps-dev): bump assertj-core from 3.11.1 to 3.14.0

Bumps [assertj-core](https://github.com/joel-costigliola/assertj-core) from 3.11.1 to 3.14.0.
- [Release notes](https://github.com/joel-costigliola/assertj-core/releases)
- [Commits](assertj/assertj@assertj-core-3.11.1...assertj-core-3.14.0)

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

pom.xml

@@ -34,7 +34,7 @@
     <license.header>com/mycila/maven/plugin/license/templates/APACHE-2.txt</license.header>
 
     <!-- project dependencies -->
-    <version.assertj>3.11.1</version.assertj>
+    <version.assertj>3.14.0</version.assertj>
     <version.junit>4.13</version.junit>
     <version.junit-jupiter>5.5.2</version.junit-jupiter>
     <version.kafka>2.1.0</version.kafka>