Insufficient minimum keyring version required due to use of keyring.errors.NoKeyringError

### Is there an existing issue for this?

- [x] I have searched the existing issues (open and closed), and could not find an existing issue

### What keywords did you use to search existing issues?

NoKeyringError

### What operating system are you using?

Linux

### If you selected 'Other', describe your Operating System here

_No response_

### What version of Python are you running?

```console
Python 3.10.16
```

### How did you install twine? Did you use your operating system's package manager or pip or something else?

```console
pip install --upgrade twine
```

### What version of twine do you have installed (include the complete output)

```console
twine version 6.1.0 (keyring: 19.2.0, packaging: 24.2, requests: 2.32.3, requests-toolbelt: 1.0.0, urllib3: 2.3.0, id: 1.5.0)
```

### Which package repository are you using?

pypi.org

### Please describe the issue that you are experiencing

When I run twine upload with version 19.2.0 of keyring, it fails since NoKeyringError was only implemented in v21.2.0 of keyring, and it's used in https://github.com/pypa/twine/blob/main/twine/auth.py#L16

### Please list the steps required to reproduce this behaviour

1. Pin keyring to  version 19.2.0
2. Install twine in a virtual environment
3. Run twine upload 'dist/*'

### Anything else you'd like to mention?

_No response_

[]