Bump react-bootstrap from 1.6.7 to 1.6.8 (#3106)

Bumps [react-bootstrap](https://github.com/react-bootstrap/react-bootstrap) from 1.6.7 to 1.6.8.
- [Release notes](https://github.com/react-bootstrap/react-bootstrap/releases)
- [Changelog](https://github.com/react-bootstrap/react-bootstrap/blob/v1.6.8/CHANGELOG.md)
- [Commits](react-bootstrap/react-bootstrap@v1.6.7...v1.6.8)

---
updated-dependencies:
- dependency-name: react-bootstrap
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>