Update devDependencies

* @babel/cli                   ^7.12.8  →  ^7.12.10
* @babel/core                  ^7.12.8  →  ^7.12.10
* @babel/preset-env            ^7.12.7  →  ^7.12.10
* @rollup/plugin-babel          ^5.2.1  →   ^5.2.2
* @rollup/plugin-commonjs      ^16.0.0  →  ^17.0.0
* @rollup/plugin-node-resolve  ^10.0.0  →  ^11.0.1
* autoprefixer                 ^10.0.2  →  ^10.1.0
* cross-env                     ^7.0.2  →   ^7.0.3
* eslint                       ^7.14.0  →  ^7.15.0
* hugo-bin                     ^0.66.2  →  ^0.67.0
* linkinator                    ^2.2.2  →   ^2.8.0
* postcss                      ^8.1.10  →   ^8.2.1
* postcss-cli                   ^8.3.0  →   ^8.3.1
* qunit                        ^2.12.0  →  ^2.13.0
* rollup                       ^2.33.3  →  ^2.35.1