Update devDependencies and pin stylelint

* @babel/cli                   ^7.16.7  →   ^7.17.0
* @babel/core                  ^7.16.7  →   ^7.17.0
* @babel/preset-env            ^7.16.7  →  ^7.16.11
* @rollup/plugin-node-resolve  ^13.1.2  →   ^13.1.3
* autoprefixer                 ^10.4.1  →   ^10.4.2
* bundlewatch                   ^0.3.2  →    ^0.3.3
* clean-css-cli                 ^5.5.0  →    ^5.5.2
* eslint                        ^8.6.0  →    ^8.8.0
* eslint-plugin-unicorn        ^40.0.0  →   ^40.1.0
* find-unused-sass-variables    ^3.1.0  →    ^4.0.1
* hugo-bin                     ^0.79.2  →   ^0.80.1
* karma                         ^6.3.9  →   ^6.3.15
* postcss                       ^8.4.5  →    ^8.4.6
* rollup                       ^2.63.0  →   ^2.67.1
* shelljs                       ^0.8.4  →    ^0.8.5

Author: XhmikosR