Bump @wdio/types from 8.4.0 to 8.6.8 (#276)

Bumps [@wdio/types](https://github.com/webdriverio/webdriverio/tree/HEAD/packages/wdio-types) from 8.4.0 to 8.6.8.
- [Release notes](https://github.com/webdriverio/webdriverio/releases)
- [Changelog](https://github.com/webdriverio/webdriverio/blob/main/CHANGELOG.md)
- [Commits](https://github.com/webdriverio/webdriverio/commits/v8.6.8/packages/wdio-types)

---
updated-dependencies:
- dependency-name: "@wdio/types"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>