Bump webdriverio from 6.11.3 to 6.12.0 (#325)

Bumps [webdriverio](https://github.com/webdriverio/webdriverio) from 6.11.3 to 6.12.0.
- [Release notes](https://github.com/webdriverio/webdriverio/releases)
- [Changelog](https://github.com/webdriverio/webdriverio/blob/master/CHANGELOG.md)
- [Commits](webdriverio/webdriverio@v6.11.3...v6.12.0)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>