fix(deps): update dependency chrome-launcher to v0.12.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
chrome-launcher	dependencies	minor	0.11.2 -> 0.12.0

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Release Notes

GoogleChrome/chrome-launcher

v0.12.0

Compare Source

• 66a5e226 flags: add new --disable flags to reduce noise and disable backgrounding (#​170)
  • --disable-component-extensions-with-background-pages
  • --disable-backgrounding-occluded-windows
  • --disable-renderer-backgrounding
  • --disable-background-timer-throttling
• c4890ee3 feat: expose public interface for locating Chrome installations (#​177)
  • Launcher.getInstallations() returns an array of paths to available Chrome binaries
• a5ccaa4e deps: update assorted dependencies (#​175)
• e67a10df --disable-translation is now --disable-features=TranslateUI (#​167)

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[coveralls]

Coverage remained the same at 100.0% when pulling b66cda2 on renovate/chrome-launcher-0.x into 2286ca1 on master.

[rpl]

this now fails as expected on the new test case added in #1775:
https://travis-ci.org/mozilla/web-ext/jobs/623186250#L912-L932

And the diff provided in the failure is useful to actually know what has changed:

 AssertionError: expected [ Array(10) ] to deeply equal [ Array(6) ]

      + expected - actual

       [
      -  "--disable-features=TranslateUI"
      -  "--disable-component-extensions-with-background-pages"
      +  "--disable-translate"
         "--disable-background-networking"
         "--disable-sync"
         "--metrics-recording-only"
         "--disable-default-apps"
         "--no-first-run"
      -  "--disable-backgrounding-occluded-windows"
      -  "--disable-renderer-backgrounding"
      -  "--disable-background-timer-throttling"

[renovate]

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