### Official Helm Chart version

1.8.0 (latest released)

### Apache Airflow version

2

### Kubernetes Version

>1.21

### Helm Chart configuration

```yaml
webserver:
  podDisruptionBudget:
    enabled: true
    config:
      minAvailable: 1
```

### Docker Image customizations

_No response_

### What happened

if you use the next values the chart you will not ablt to install the chart, the problem is in the schema  in this line


https://github.com/apache/airflow/blob/main/chart/values.schema.json#L3320

### What you think should happen instead

_No response_

### How to reproduce

use the this values

```yaml
webserver:
  podDisruptionBudget:
    enabled: true
    config:
      minAvailable: 1
```

### 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)

def test_should_pass_validation_with_just_pdb_enabled_v1(self):
        render_chart(
            values={"webserver": {"podDisruptionBudget": {"enabled": True}}},
            show_only=["templates/webserver/webserver-poddisruptionbudget.yaml"],
        )  
    def test_should_pass_validation_with_just_pdb_enabled_v1beta1(self):
        render_chart(
            values={"webserver": {"podDisruptionBudget": {"enabled": True}}},
            show_only=["templates/webserver/webserver-poddisruptionbudget.yaml"],
            kubernetes_version="1.16.0",
        )  
    def test_should_add_component_specific_labels(self):
        docs = render_chart(
            values={
                "webserver": {
                    "podDisruptionBudget": {"enabled": True},
                    "labels": {"test_label": "test_label_value"},
                },
            },
            show_only=["templates/webserver/webserver-poddisruptionbudget.yaml"],
        )
        assert "test_label" in jmespath.search("metadata.labels", docs[0])
        assert jmespath.search("metadata.labels", docs[0])["test_label"] == "test_label_value"