Bump actionpack from 4.0.0 to 6.0.3
Bump actionpack from 4.0.0 to 6.0.3

Bumps [actionpack](https://github.com/rails/rails) from 4.0.0 to 6.0.3.
- [Release notes](https://github.com/rails/rails/releases)
- [Changelog](https://github.com/rails/rails/blob/v6.0.3/actionpack/CHANGELOG.md)
- [Commits](https://github.com/rails/rails/compare/v4.0.0...v6.0.3)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
oliverfriedmann/rails-bookmarklet,oliverfriedmann/rails-bookmarklet,oliverfriedmann/rails-bookmarklet