### Official Helm Chart version

1.10.0 (latest released)

### Apache Airflow version

2.7.1

### Kubernetes Version

1.26.7

### Helm Chart configuration

_No response_

### Docker Image customizations

_No response_

### What happened

When enabling `dagProcessor.logGroomerSidecar`, our OPA gatekeeper flags the `dag-processor-log-groomer` container with the appropriate non-root permissions. There is no way to set the `securityContexts` for this sidecar as it is not even enabled.

### What you think should happen instead

The `securityContexts` setting for the `dag-processor-log-groomer` container should be configurable.

### How to reproduce

In the Helm values, set `dagProcessor.logGroomerSidecar` to `true`.

### Anything else

This problem occurs when there are OPA policies in place pertaining to strict `securityContexts` settings.

### Are you willing to submit PR?

- [X] Yes I am willing to submit a PR!

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)

"""Tests SC Backward Compatibility."""
    def test_check_deployments_and_jobs(self):
        docs = render_chart(
            values={
                "uid": 3000,
                "gid": 30,
                "webserver": {"defaultUser": {"enabled": True}},
                "flower": {"enabled": True},
                "airflowVersion": "2.2.0",
                "executor": "CeleryKubernetesExecutor",
            },
            show_only=[
                "templates/flower/flower-deployment.yaml",
                "templates/scheduler/scheduler-deployment.yaml",
                "templates/triggerer/triggerer-deployment.yaml",
                "templates/webserver/webserver-deployment.yaml",
                "templates/workers/worker-deployment.yaml",
                "templates/jobs/create-user-job.yaml",
                "templates/jobs/migrate-database-job.yaml",
            ],
        )
        for doc in docs:
            assert 3000 == jmespath.search("spec.template.spec.securityContext.runAsUser", doc)
            assert 30 == jmespath.search("spec.template.spec.securityContext.fsGroup", doc)
    def test_check_statsd_uid(self):