postcss-selector-parser: invalid/non stable ast for combinator with comment

Input:

h2 /*test*/ h4 { } /* Here we don't have `comment` node in ast (store comment in `raws`) */
h2/*test*/h4 { } /* Comment in ast */

It is do impossible analyzes comments, also adopt new version to stylelint and prettier. For me it is bug, but fixing this change ast.