Bumps [webpacker](https://github.com/rails/webpacker) from 4.2.2 to 5.1.1. - [Release notes](https://github.com/rails/webpacker/releases) - [Changelog](https://github.com/rails/webpacker/blob/master/CHANGELOG.md) - [Commits](https://github.com/rails/webpacker/compare/v4.2.2...v5.1.1) Signed-off-by: dependabot-preview[bot] <support@dependabot.com> Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>master