chore(deps): update webdriverio monorepo to v6.9.1

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@wdio/cli	6.9.0 -> 6.9.1
@wdio/local-runner	6.9.0 -> 6.9.1

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Release Notes

webdriverio/webdriverio

### [`v6.9.1`](https://togithub.com/webdriverio/webdriverio/blob/master/CHANGELOG.md#v691-2020-11-20) [Compare Source](https://togithub.com/webdriverio/webdriverio/compare/v6.9.0...v6.9.1) ##### :bug: Bug Fix - `webdriverio` - [#​6127](https://togithub.com/webdriverio/webdriverio/pull/6127) Switch window query strings ([@​christon88](https://togithub.com/christon88)) ##### :nail_care: Polish - `wdio-sync`, `webdriverio` - [#​6133](https://togithub.com/webdriverio/webdriverio/pull/6133) Add Options to Save PDF ([@​NickR23](https://togithub.com/NickR23)) ##### Committers: 3 - Christian Onsager ([@​christon88](https://togithub.com/christon88)) - Kazuaki Matsuo ([@​KazuCocoa](https://togithub.com/KazuCocoa)) - Nick Richardson ([@​NickR23](https://togithub.com/NickR23))

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