chore(deps): update dependency karma-chrome-launcher to v2.2.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
karma-chrome-launcher	2.0.0 -> 2.2.0

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Release Notes

karma-runner/karma-chrome-launcher

v2.2.0

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Features

• add ChromiumHeadless (7a12021)

2.1.1 (2017-05-05)

Bug Fixes

• add disable-renderer-backgrounding flag (6bfc170), closes #​123

v2.1.1

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Bug Fixes

• add disable-renderer-backgrounding flag (6bfc170), closes #​123

v2.1.0

Compare Source

Features

• add support for custom user-data-dir in Chromium (579fcfc), closes #​89
• add support for headless Chrome/ChromeCanary (7446181)

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