v4.6.0
Bumps [bootstrap](https://github.com/twbs/bootstrap-rubygem) from 4.5.3 to 4.6.0. - [Release notes](https://github.com/twbs/bootstrap-rubygem/releases) - [Changelog](https://github.com/twbs/bootstrap-rubygem/blob/master/CHANGELOG.md) - [Commits](https://github.com/twbs/bootstrap-rubygem/compare/v4.5.3...v4.6.0) Signed-off-by: dependabot-preview[bot] <support@dependabot.com>