[CORE-69]: Bump io.kubernetes:client-java

Bumps [io.kubernetes:client-java](https://github.com/kubernetes-client/java) from 22.0.1-legacy to 23.0.0-legacy.
- [Release notes](https://github.com/kubernetes-client/java/releases)
- [Changelog](https://github.com/kubernetes-client/java/blob/master/CHANGELOG.md)
- [Commits](https://github.com/kubernetes-client/java/commits)

---
updated-dependencies:
- dependency-name: io.kubernetes:client-java
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

buffer-clienttests/build.gradle

@@ -20,7 +20,7 @@ dependencies {
         guava = "33.4.0-jre"
         jackson = "2.18.2"
         jersey = "3.1.10"
-        kubernetesClient = "22.0.1-legacy"
+        kubernetesClient = "23.0.0-legacy"
         logback = "1.5.16"
         slf4j = "2.0.16"
         hamcrest = "3.0"