No support for stylelint v16

[bgonp]

Stylelint 16.0.0 was released a month ago but this project doesn't support it yet. Looks like everything is working as expected, didn't see any breaking change in the v16, but we can see a warning when installing dependencies and it could be annoying:

stylelint is listed by your project with version 16.1.0, which doesn't satisfy what stylelint-config-clean-order (p9b657) and other dependencies request (^14.0.0 || ^15.0.0).

The reason is the stylelint-order dependency requiring ^6.0.2 which doesn't support stylelint@16.
On styleling-order@6.0.4 they added support for stylelint@16, so this problem doesn't happen in a fresh installation, but in my case I can see the warning message when installing using my old lock file.

I'll take the liberty to send a quick PR updating it, feel free to discard it in case the solution is not that easy.

[kutsan]

Thanks for the detailed explanation and addressing the issue with a pull request. PR is merged and published with v5.3.0. Thanks again!