build(deps): bump bleach from 3.1.3 to 3.1.4

Bumps [bleach](https://github.com/mozilla/bleach) from 3.1.3 to 3.1.4.
- [Release notes](https://github.com/mozilla/bleach/releases)
- [Changelog](https://github.com/mozilla/bleach/blob/master/CHANGES)
- [Commits](mozilla/bleach@v3.1.3...v3.1.4)

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