Enable compatibility with stylelint 16.x

[swcm-mnestler]

Like back in #273, stylelint 16 is released and this project's peer dependency constraints doesn't allow it. Several deprecated rules were removed in the new version, so it might take a bit of effort to upgrade.

npm ERR! While resolving: stylelint-config-sass-guidelines@10.0.0
npm ERR! Found: stylelint@16.0.1
npm ERR! node_modules/stylelint
npm ERR!   dev stylelint@"^16.0.0" from the root project
npm ERR! 
npm ERR! Could not resolve dependency:
npm ERR! peer stylelint@"^15.2.0" from stylelint-config-sass-guidelines@10.0.0
npm ERR! node_modules/stylelint-config-sass-guidelines
npm ERR!   dev stylelint-config-sass-guidelines@"10.0.0" from the root project
npm ERR! 
npm ERR! Conflicting peer dependency: stylelint@15.11.0
npm ERR! node_modules/stylelint
npm ERR!   peer stylelint@"^15.2.0" from stylelint-config-sass-guidelines@10.0.0
npm ERR!   node_modules/stylelint-config-sass-guidelines
npm ERR!     dev stylelint-config-sass-guidelines@"10.0.0" from the root project

[echoix]

The tool will need to be disabled in Megalinter to not hold back the other stylelint tools, like with the previous major release.

[bjankord]

stylelint v16.x support has been released in v11.0.0