Bump bootstrap from 5.1.3 to 5.2.0

Bumps [bootstrap](https://github.com/twbs/bootstrap) from 5.1.3 to 5.2.0.
- [Release notes](https://github.com/twbs/bootstrap/releases)
- [Commits](twbs/bootstrap@v5.1.3...v5.2.0)

---
updated-dependencies:
- dependency-name: bootstrap
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]