Bump json5, babel-core and karma-babel-preprocessor

Removes [json5](https://github.com/json5/json5). It's no longer used after updating ancestor dependencies [json5](https://github.com/json5/json5), [babel-core](https://github.com/babel/babel) and [karma-babel-preprocessor](https://github.com/babel/karma-babel-preprocessor). These dependencies need to be updated together.


Removes `json5`

Updates `babel-core` from 6.26.3 to 7.0.0-bridge.0
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/main/CHANGELOG.md)
- [Commits](https://github.com/babel/babel/commits)

Updates `karma-babel-preprocessor` from 6.0.1 to 8.0.2
- [Release notes](https://github.com/babel/karma-babel-preprocessor/releases)
- [Commits](babel/karma-babel-preprocessor@v6.0.1...v8.0.2)

---
updated-dependencies:
- dependency-name: json5
  dependency-type: indirect
- dependency-name: babel-core
  dependency-type: indirect
- dependency-name: karma-babel-preprocessor
  dependency-type: direct:development
...

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