Bump org.assertj:assertj-core from 3.26.0 to 3.26.3 (#9324)

Bumps [org.assertj:assertj-core](https://github.com/assertj/assertj) from 3.26.0 to 3.26.3.
- [Release notes](https://github.com/assertj/assertj/releases)
- [Commits](https://github.com/assertj/assertj/compare/assertj-build-3.26.0...assertj-build-3.26.3)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

build.gradle

@@ -56,7 +56,7 @@ ext {
     apacheSshdVersion = '2.12.1'
     artemisVersion = '2.33.0'
     aspectjVersion = '1.9.22.1'
-    assertjVersion = '3.26.0'
+    assertjVersion = '3.26.3'
     assertkVersion = '0.28.1'
     avroVersion = '1.11.3'
     awaitilityVersion = '4.2.1'