Adding support for v1.25.0 k8s (#953)

Author: gizas

.ci/Jenkinsfile

@@ -16,7 +16,7 @@ pipeline {
     AWS_ACCOUNT_SECRET = 'secret/observability-team/ci/elastic-observability-aws-account-auth'
     HOME = "${env.WORKSPACE}"
     KIND_VERSION = 'v0.14.0'
-    K8S_VERSION = 'v1.24.0'
+    K8S_VERSION = 'v1.25.0'
 
     JOB_GCS_BUCKET = 'beats-ci-temp'
     JOB_GCS_BUCKET_INTERNAL = 'beats-ci-temp-internal'