The StressTests Java KafkaIO job is flaky

[github-actions[bot]]

The StressTests Java KafkaIO is failing over 50% of the time. Please visit https://github.com/apache/beam/actions/workflows/beam_StressTests_Java_KafkaIO.yml?query=is%3Afailure+branch%3Amaster to see all failed workflow runs. See also Grafana statistics: http://metrics.beam.apache.org/d/CTYdoxP4z/ga-post-commits-status?orgId=1&viewPanel=3&var-Workflow=StressTests%20Java%20KafkaIO

[andreydevyatkin]

Should be fixed in #31089

[github-actions[bot]]

Reopening since the workflow is still flaky

[andreydevyatkin]

The issue with Regional internal LB backend services which are used for the kafka clusters has been fixed. The recent run was green, so we can close it for now.