Helm temporary directory is not cleaned up.

### Bill of Materials or CLI Version

_No response_

### Execution Environment

JUnit Extensions

### Slf4j Logging Implementation

None

### To Reproduce

```markdown
Use the helm client and notice it leaves temporary directories around with the helm executable in each.
```

### Describe the bug

The helm client extracts the helm executable to a temporary directory, and this temporary directory is not cleaned up.

### Describe the expected behavior

The temporary directory should be cleaned up.

Would be nice if client implemented `AutoCloseable` and cleaned up after itself inside `close()`.

### Whole JUnit/CLI Logs

```shell
N/A
```

### Additional Context

Example directory name is `HelmSoftwareLoader4512790602684642253` and it contains the helm executable.

The issue may be that File::deleteOnExit fails to remove a non-empty directory.

Locate the Helm client and the code that extracts the executable into the temporary directory; inspect how File::deleteOnExit and the suggested AutoCloseable close() behavior apply. Reproduce the issue with the Helm client, then verify that its temporary directory and executable are removed after use.

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