Fixes #36797 (closed)
More details in https://github.com/postcss/autoprefixer/issues/1471.
Tested this new 10.4.8 autoprefixer version with our npm run css which doesn't display the warning message anymore.
Note: It should be backported to v4 as well
Feel free to close this PR to include it in a more general "Update dependencies" PR. It was just to inform you that this bump of autoprefixer dep will close #36797 (closed)