build(deps): bump rdiscount from 2.2.0.1 to 2.2.0.2 in /Library/Homebrew

Bumps [rdiscount](https://github.com/davidfstr/rdiscount) from 2.2.0.1 to 2.2.0.2.
- [Release notes](https://github.com/davidfstr/rdiscount/releases)
- [Changelog](https://github.com/davidfstr/rdiscount/blob/master/CHANGELOG.md)
- [Commits](https://github.com/davidfstr/rdiscount/compare/2.2.0.1...2.2.0.2

)

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