Bumps [capybara](https://github.com/teamcapybara/capybara) from 3.14.0 to 3.15.0.
- [Release notes](https://github.com/teamcapybara/capybara/releases)
- [Changelog](https://github.com/teamcapybara/capybara/blob/master/History.md)
- [Commits](https://github.com/teamcapybara/capybara/compare/3.14.0...3.15.0

)

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