### Official Helm Chart version

1.10.0 (latest released)

### Apache Airflow version

2.6.3

### Kubernetes Version

1.27

### Helm Chart configuration

helm chart doesn't support securityContext for airflow-run-airflow-migration and dag-processor init container

### Docker Image customizations

_No response_

### What happened

_No response_

### What you think should happen instead

_No response_

### How to reproduce

helm chart doesn't support securityContext  for airflow-run-airflow-migration and dag-processor init container. 

### Anything else

_No response_

### Are you willing to submit PR?

- [ ] 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)

docs = render_chart(
            values={
                "dagProcessor": {
                    "enabled": True,
                    "command": command,
                    "args": args,
                }
            },
            show_only=["templates/dag-processor/dag-processor-deployment.yaml"],
        )
        assert command == jmespath.search("spec.template.spec.containers[0].command", docs[0])
        assert args == jmespath.search("spec.template.spec.containers[0].args", docs[0])
    def test_command_and_args_overrides_are_templated(self):