chore(deps): update webdriverio monorepo to v6.8.1

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
@wdio/cli	devDependencies	patch	6.8.0 -> 6.8.1
@wdio/local-runner	devDependencies	patch	6.8.0 -> 6.8.1
@wdio/spec-reporter	devDependencies	minor	6.7.0 -> 6.8.1

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Release Notes

webdriverio/webdriverio

### [`v6.8.1`](https://togithub.com/webdriverio/webdriverio/blob/master/CHANGELOG.md#v681-2020-11-17) [Compare Source](https://togithub.com/webdriverio/webdriverio/compare/v6.8.0...v6.8.1) ##### :bug: Bug Fix - `webdriverio` - [#​6066](https://togithub.com/webdriverio/webdriverio/pull/6066) Closes [#​6057](https://togithub.com/webdriverio/webdriverio/issues/6057) ([@​vmelikyan](https://togithub.com/vmelikyan)) - `wdio-allure-reporter`, `wdio-reporter` - [#​6076](https://togithub.com/webdriverio/webdriverio/pull/6076) Another take on bug [#​4953](https://togithub.com/webdriverio/webdriverio/issues/4953) ([@​oversizedhat](https://togithub.com/oversizedhat)) ##### :nail_care: Polish - `wdio-runner` - [#​6122](https://togithub.com/webdriverio/webdriverio/pull/6122) Execute beforeSession hook before everything is initiated ([@​christian-bromann](https://togithub.com/christian-bromann)) ##### :memo: Documentation - `webdriverio` - [#​6117](https://togithub.com/webdriverio/webdriverio/pull/6117) Update examples with outdated waitForVisible method ([@​cben](https://togithub.com/cben)) ##### Committers: 5 - Beni Cherniavsky-Paskin ([@​cben](https://togithub.com/cben)) - Christian Bromann ([@​christian-bromann](https://togithub.com/christian-bromann)) - Vahan Melikyan ([@​vmelikyan](https://togithub.com/vmelikyan)) - [@​dependabot-preview\[bot\]](https://togithub.com/apps/dependabot-preview) - [@​oversizedhat](https://togithub.com/oversizedhat)

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