Bump assertj-core from 3.13.2 to 3.18.1

Bumps [assertj-core](https://github.com/assertj/assertj-core) from 3.13.2 to 3.18.1.
- [Release notes](https://github.com/assertj/assertj-core/releases)
- [Commits](assertj/assertj@assertj-core-3.13.2...assertj-core-3.18.1)

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

pom.xml

@@ -108,7 +108,7 @@
         <dependency>
             <groupId>org.assertj</groupId>
             <artifactId>assertj-core</artifactId>
-            <version>3.13.2</version>
+            <version>3.18.1</version>
             <scope>test</scope>
         </dependency>
         <dependency>