Support :has()

[janfaracik]

Working on a PR for Jenkins using :has() to style a parent element when its child is disabled https://github.com/jenkinsci/jenkins/blob/aa391585f2a883d7a1a74d2ac3f36740e47233ca/war/src/main/scss/form/search-bar.scss#L219.

This is resulting in a CSSParseException Error in pseudo class or element. (Invalid token ":". Was expecting one of: <S>, <NUMBER>, <IDENT>, <STRING>, "-", "+", <DIMENSION>.).

It'd be great if :has() was supported - thanks :)

[rbri]

Will be some work - have to find some time for this.