Update JS and PY dependencies, build for es2020 browsers

[silverwind]

• Update all JS dependencies minus @mcaptcha/vanilla-glue
• Fix new lint errors
• Regenerate SVGs
• Switch to maintained stylelint stylistic plugin
• Tested Mermaid, Citation, Swagger, sorting
• Raise ESBuild target to es2020 as dictated by pretty-ms dependency.

[silverwind]

Webpack chokes on BigInt literals in pretty-ms, which will require raising the webpack target to es2020, and I think it's not worth doing that as it will likely cause problems with older browsers like PaleMoon, so I will exclude it from further updates via updates.config.js.

[silverwind]

On the other hand, PaleMoon seems to implement BigInt since v32.4.0 (https://www.palemoon.org/releasenotes.shtml), so I think it's worth to switch to es2020, it will also reduce bundle size.

[silverwind]

Now with es2020, there is a 70kB reduction (0.28%) in JS asset size:

# es2015
$ du -b --apparent-size public/assets/js
23300624  public/assets/js

# es2020
$ du -b --apparent-size public/assets/js
23235235  public/assets/js

[techknowlogick]

@wolfbeast a gentle ping as a heads up about this.

[wolfbeast]

@techknowlogick thanks for the ping. We should have complete support for ES2020 as of 6 months ago, but let me know if you want me to test something.
Ref for our final implementation meta issue of what we didn't yet have before: https://repo.palemoon.org/MoonchildProductions/UXP/issues/1734