[Subscription basic] [zeek] Failing test daily: system test: logs in zeek.mysql

- Stack version: Same as in Pull Request builds
- Subscription: basic
- Package: zeek
- Failing test: system test: logs
- DataStream: mysql
- Owners:
- @elastic/integration-experience

Error:
```
could not setup agent: service is unhealthy: container (ID: 919cf08918dc) exited with code 1
```

First build failed: https://buildkite.com/elastic/integrations/builds/45843

Run the system test: logs for the zeek package with the mysql DataStream and inspect why the agent container exits with code 1 or reports an unhealthy service. Use build 45843 as the initial failure reference; the work is done when this daily test completes successfully in Pull Request builds.

Written by the indexing model from the issue text.