Unknown property text-wrap

I’m seeing both `csstree-validator@3.0.0` and `stylelint-csstree-validator@3.0.0` flag `text-wrap` as an unknown property, even though it appears in the [CSS Tree docs](https://csstree.github.io/docs/syntax/#Property:text-wrap)

Steps to reproduce:

1. Create a file with the following contents
```css
div {
text-wrap: nowrap;
}
```
2. Run it through `csstree-validator`
3. It will return the following error:
```
* Unknown property `text-wrap`
```
5. Running the same file through the [W3C Validator](https://jigsaw.w3.org/css-validator/#validate_by_upload) does not return any errors