chore(deps): update dependency @wdio/cli to v6.7.4

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
@wdio/cli	devDependencies	patch	6.7.3 -> 6.7.4

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Release Notes

webdriverio/webdriverio

### [`v6.7.4`](https://togithub.com/webdriverio/webdriverio/blob/master/CHANGELOG.md#v674-2020-11-09) [Compare Source](https://togithub.com/webdriverio/webdriverio/compare/v6.7.3...v6.7.4) ##### :memo: Documentation - `wdio-cli` - [#​6078](https://togithub.com/webdriverio/webdriverio/pull/6078) feat(ui5-service): add UI5 support to wdio ([@​dominikfeininger](https://togithub.com/dominikfeininger)) ##### Committers: 1 - dominik feininger ([@​dominikfeininger](https://togithub.com/dominikfeininger))

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