build(deps-dev): Bump assertj-core from 3.22.0 to 3.23.1 in /maven

Bumps [assertj-core](https://github.com/assertj/assertj-core) from 3.22.0 to 3.23.1.
- [Release notes](https://github.com/assertj/assertj-core/releases)
- [Commits](assertj/assertj@assertj-core-3.22.0...assertj-core-3.23.1)

---
updated-dependencies:
- dependency-name: org.assertj:assertj-core
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

maven/bnd-plugin-parent/pom.xml

@@ -28,7 +28,7 @@
 		<aether.version>1.0.2.v20150114</aether.version>
 		<!-- The following versions should match those in cnf/ext/junit.bnd -->
 		<junit.jupiter.version>5.8.2</junit.jupiter.version>
-		<assertj.version>3.22.0</assertj.version>
+		<assertj.version>3.23.1</assertj.version>
 	</properties>
 
 	<url>https://bnd.bndtools.org/</url>