build(deps-dev): bump @wdio/sync from 7.1.0 to 7.2.1 (#107)

Bumps [@wdio/sync](https://github.com/webdriverio/webdriverio) from 7.1.0 to 7.2.1.
- [Release notes](https://github.com/webdriverio/webdriverio/releases)
- [Changelog](https://github.com/webdriverio/webdriverio/blob/main/CHANGELOG.md)
- [Commits](webdriverio/webdriverio@v7.1.0...v7.2.1)

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Author: dependabot[bot]