chore: update project dependencies and devDependencies

@coreui/coreui ^3.0.0  →   ^3.0.0
@coreui/utils ^1.2.2  →   ^1.2.4
@popperjs/core ^2.0.6  →   ^2.4.0
@babel/core ^7.8.4  →   ^7.9.6
@babel/plugin-proposal-object-rest-spread   ^7.8.3  →   ^7.9.6
@babel/preset-env ^7.8.4  →   ^7.9.6
autoprefixer ^9.7.4  →   ^9.8.0
babel-eslint ^10.0.3  →  ^10.1.0
chalk ^3.0.0  →   ^4.0.0
cross-env ^7.0.0  →   ^7.0.2
eslint ^6.8.0  →   ^7.0.0
eslint-plugin-import ^2.20.1  →  ^2.20.2
eslint-plugin-unicorn ^16.1.1  →  ^20.0.0
js-beautify ^1.10.3  →  ^1.11.0
jsdom ^16.2.0  →  ^16.2.2
minimist ^1.2.0  →   ^1.2.5
node-sass ^4.13.1  →  ^4.14.1
nodemon ^2.0.2  →   ^2.0.4
postcss-cli ^7.1.0  →   ^7.1.1
shelljs ^0.8.3  →   ^0.8.4
stylelint ^13.2.0  →  ^13.5.0
stylelint-scss ^3.14.2  →  ^3.17.2

Author: mrholek