build(deps): bump io.fabric8:kubernetes-client from 6.8.1 to 6.9.1

Bumps [io.fabric8:kubernetes-client](https://github.com/fabric8io/kubernetes-client) from 6.8.1 to 6.9.1.
- [Release notes](https://github.com/fabric8io/kubernetes-client/releases)
- [Changelog](https://github.com/fabric8io/kubernetes-client/blob/main/CHANGELOG.md)
- [Commits](fabric8io/kubernetes-client@v6.8.1...v6.9.1)

---
updated-dependencies:
- dependency-name: io.fabric8:kubernetes-client
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

build.gradle

@@ -42,7 +42,7 @@ dependencies {
     implementation 'org.springframework.boot:spring-boot-starter-actuator'
     implementation 'org.springframework.boot:spring-boot-starter-webflux'
     implementation 'org.springframework.boot:spring-boot-starter-validation'
-    implementation 'io.fabric8:kubernetes-client:6.8.1'
+    implementation 'io.fabric8:kubernetes-client:6.9.1'
     implementation 'com.nimbusds:nimbus-jose-jwt:9.36'
     implementation 'org.bouncycastle:bcpkix-jdk18on:1.76'