Bump org.assertj:assertj-core from 3.23.1 to 3.25.3 (#230)

Bumps [org.assertj:assertj-core](https://github.com/assertj/assertj) from 3.23.1 to 3.25.3.
- [Release notes](https://github.com/assertj/assertj/releases)
- [Commits](assertj/assertj@assertj-core-3.23.1...assertj-build-3.25.3)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Stephen Colebourne <scolebourne@joda.org>

Author: dependabot[bot]

modules/pom.xml

@@ -412,7 +412,7 @@
   <!-- ==================================================================== -->
   <properties>
     <!-- Versions -->
-    <assertj.version>3.23.1</assertj.version>
+    <assertj.version>3.25.3</assertj.version>
     <jcommander.version>1.82</jcommander.version>
     <joda-convert.version>2.2.3</joda-convert.version>
     <joda-beans.version>2.10.0</joda-beans.version>