chore: update dependencies and devDependencies

 eslint                  ^7.24.0  →   ^7.25.0
 eslint-plugin-unicorn   ^30.0.0  →   ^31.0.0
 postcss                 ^8.2.12  →   ^8.2.13
 stylelint              ^13.12.0  →  ^13.13.0
 terser                    5.6.1  →     5.7.0

Author: mrholek