chore: update dependencies and devDependencies

@babel/cli                   ^7.12.8  →   ^7.13.0
@babel/core                  ^7.12.9  →   ^7.13.8
@babel/preset-env            ^7.12.7  →   ^7.13.9
@popperjs/core                ^2.5.4  →    ^2.9.0
@rollup/plugin-babel          ^5.2.2  →    ^5.3.0
@rollup/plugin-commonjs      ^17.0.0  →   ^17.1.0
@rollup/plugin-node-resolve  ^11.0.0  →   ^11.2.0
@rollup/plugin-replace        ^2.3.4  →    ^2.4.1
autoprefixer                 ^10.1.0  →   ^10.2.4
bundlewatch                   ^0.3.1  →    ^0.3.2
clean-css-cli                 ^4.3.0  →    ^5.2.1
eslint                       ^7.15.0  →   ^7.21.0
eslint-config-xo             ^0.33.1  →   ^0.35.0
eslint-plugin-unicorn        ^23.0.0  →   ^28.0.2
find-unused-sass-variables    ^3.0.0  →    ^3.1.0
hugo-bin                     ^0.67.0  →   ^0.69.0
jquery                        ^3.5.1  →    ^3.6.0
karma                         ^5.2.3  →    ^6.1.1
karma-browserstack-launcher    1.4.0  →     1.6.0
karma-rollup-preprocessor     ^7.0.5  →    ^7.0.6
linkinator                   ^2.13.1  →   ^2.13.6
lockfile-lint                 ^4.3.7  →    ^4.6.2
nodemon                       ^2.0.6  →    ^2.0.7
postcss                       ^8.2.1  →    ^8.2.6
postcss-cli                   ^8.3.0  →    ^8.3.1
rollup                       ^2.34.2  →   ^2.40.0
rollup-plugin-istanbul        ^2.0.1  →    ^3.0.0
rtlcss                        ^2.6.2  →    ^3.1.2
sass                         ^1.30.0  →   ^1.32.8
stylelint                    ^13.8.0  →  ^13.11.0
terser                         5.1.0  →     5.6.0
vnu-jar                      20.6.30  →    21.2.5

Author: mrholek