Bump webpack and babel-loader

Bumps [webpack](https://github.com/webpack/webpack) and [babel-loader](https://github.com/babel/babel-loader). These dependencies needed to be updated together.

Updates `webpack` from 1.15.0 to 5.94.0
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](webpack/webpack@v1.15.0...v5.94.0)

Updates `babel-loader` from 5.4.2 to 5.4.2
- [Release notes](https://github.com/babel/babel-loader/releases)
- [Changelog](https://github.com/babel/babel-loader/blob/main/CHANGELOG.md)
- [Commits](babel/babel-loader@v5.4.2...v5.4.2)

---
updated-dependencies:
- dependency-name: webpack
  dependency-type: direct:development
- dependency-name: babel-loader
  dependency-type: direct:development
...

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