Bump bootstrap from 4.5.0 to 4.5.2

Bumps [bootstrap](https://github.com/twbs/bootstrap) from 4.5.0 to 4.5.2.
- [Release notes](https://github.com/twbs/bootstrap/releases)
- [Commits](https://github.com/twbs/bootstrap/compare/v4.5.0...v4.5.2

)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
Signed-off-by: npmbuildbot[bot] <npmbuildbot[bot]@users.noreply.github.com>