Bump bl from 2.2.0 to 2.2.1 Bumps [bl](https://github.com/rvagg/bl) from 2.2.0 to 2.2.1. - [Release notes](https://github.com/rvagg/bl/releases) - [Commits](https://github.com/rvagg/bl/compare/v2.2.0...v2.2.1) Signed-off-by: dependabot[bot]