Bump assertj-core from 3.15.0 to 3.16.1 (#1)

Bumps [assertj-core](https://github.com/joel-costigliola/assertj-core) from 3.15.0 to 3.16.1.
- [Release notes](https://github.com/joel-costigliola/assertj-core/releases)
- [Commits](https://github.com/joel-costigliola/assertj-core/compare/assertj-core-3.15.0...assertj-core-3.16.1)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>
Co-authored-by: Paul Campbell <pcampbell@kemitix.net>

pom.xml

@@ -24,7 +24,7 @@
         <kemitix-maven-tiles.version>2.5.0</kemitix-maven-tiles.version>
         <kemitix-checkstyle.version>5.4.0</kemitix-checkstyle.version>
         <junit.version>5.6.2</junit.version>
-        <assertj.version>3.15.0</assertj.version>
+        <assertj.version>3.16.1</assertj.version>
     </properties>
 
     <dependencies>