chore: update dependencies and devDependencies

 @coreui/coreui                              ^3.2.0  →    ^3.3.0
 @coreui/utils                               ^1.2.4  →    ^1.3.1
 @popperjs/core                              ^2.4.0  →    ^2.5.4
 chart.js                                    ^2.9.3  →    ^2.9.4
 @babel/cli                                  ^7.8.4  →   ^7.12.7
 @babel/core                                 ^7.9.6  →   ^7.12.7
 @babel/plugin-proposal-object-rest-spread   ^7.9.6  →   ^7.12.1
 @babel/preset-env                           ^7.9.6  →   ^7.12.7
 @coreui/vendors-injector                    ^1.0.2  →    ^1.1.0
 autoprefixer                                ^9.8.0  →   ^10.0.2
 browser-sync                               ^2.26.7  →  ^2.26.13
 chalk                                       ^4.0.0  →    ^4.1.0
 copyfiles                                   ^2.2.0  →    ^2.4.0
 eslint                                      ^7.0.0  →   ^7.14.0
 eslint-config-xo                           ^0.29.1  →   ^0.33.1
 eslint-plugin-import                       ^2.20.2  →   ^2.22.1
 eslint-plugin-unicorn                      ^20.0.0  →   ^23.0.0
 js-beautify                                ^1.11.0  →   ^1.13.0
 jsdom                                      ^16.2.2  →   ^16.4.0
 node-sass                                  ^4.14.1  →    ^5.0.0
 nodemon                                     ^2.0.4  →    ^2.0.6
 postcss-cli                                 ^7.1.1  →    ^8.3.0
 postcss-combine-duplicated-selectors        ^8.1.0  →   ^10.0.2
 pug                                         ^2.0.4  →    ^3.0.0
 stylelint                                  ^13.5.0  →   ^13.8.0
 stylelint-order                             ^4.0.0  →    ^4.1.0
 stylelint-scss                             ^3.17.2  →   ^3.18.0

Author: mrholek