feat: Webpack 5 support (styleguidist#1903)

* Upgrade react-dev-utils to latest version v12 (supports Webpack 5)
* Fix Webpack example for local testing
* Upgrade webpack related dependencies for maintenance: webpack, webpack-cli, and webpack-dev-server
* Remove unnecessary Webpack configuration around Hot Module Replacement. webpack-dev-server should automatically inject HMR related configurations already

Closes styleguidist#1703
Closes styleguidist#1864
Closes styleguidist#1740
Closes styleguidist#1822
Closes styleguidist#1786

Build(deps): Bump url-parse from 1.4.7 to 1.5.3 (styleguidist#1896)

Bumps [url-parse](https://github.com/unshiftio/url-parse) from 1.4.7 to 1.5.3.
- [Release notes](https://github.com/unshiftio/url-parse/releases)
- [Commits](unshiftio/url-parse@1.4.7...1.5.3)

---
updated-dependencies:
- dependency-name: url-parse
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

docs: fix link to webpack config (styleguidist#1856)

docs: fix link to webpack config (styleguidist#1856)

fix: Bump ast-types version (styleguidist#1823)

Set ast-types version to 0.14.2 to fix ChainExpression issue.

Fixes styleguidist#1704

update github script to v4 (styleguidist#1813)

Co-authored-by: Jason Williams <[email protected]>

Add link to Styleguidist server

Add link to Styleguidist server

Build(deps): Bump ssri from 8.0.0 to 8.0.1 in /examples/webpack (styl…

…eguidist#1769)

Bumps [ssri](https://github.com/npm/ssri) from 8.0.0 to 8.0.1.
- [Release notes](https://github.com/npm/ssri/releases)
- [Changelog](https://github.com/npm/ssri/blob/latest/CHANGELOG.md)
- [Commits](npm/ssri@v8.0.0...v8.0.1)

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Build(deps): Bump ssri from 8.0.0 to 8.0.1 in /examples/webpack (styl…

…eguidist#1769)

Bumps [ssri](https://github.com/npm/ssri) from 8.0.0 to 8.0.1.
- [Release notes](https://github.com/npm/ssri/releases)
- [Changelog](https://github.com/npm/ssri/blob/latest/CHANGELOG.md)
- [Commits](npm/ssri@v8.0.0...v8.0.1)

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>