chore(deps): bump org.assertj:assertj-core from 3.25.3 to 3.26.0

Bumps [org.assertj:assertj-core](https://github.com/assertj/assertj) from 3.25.3 to 3.26.0.
- [Release notes](https://github.com/assertj/assertj/releases)
- [Commits](assertj/assertj@assertj-build-3.25.3...assertj-build-3.26.0)

---
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>

build.gradle

@@ -100,7 +100,7 @@ dependencies {
 
     testImplementation "org.openjdk.jmh:jmh-core:1.37"
     testImplementation "org.openjdk.jmh:jmh-generator-annprocess:1.37"
-    testImplementation "org.assertj:assertj-core:3.25.3"
+    testImplementation "org.assertj:assertj-core:3.26.0"
     testImplementation 'org.awaitility:awaitility:4.2.1'
 
     jmh "org.apache.kafka:kafka_2.12:${kafkaVersion}"