Bump karma-browserstack-launcher from 1.4.0 to 1.6.0

[dependabot]

Bumps karma-browserstack-launcher from 1.4.0 to 1.6.0.

Changelog

Sourced from karma-browserstack-launcher's changelog.

1.5.1 (2019-04-03)

Features

• Switched to official browserstack local package, as it is frequently updated and used across multiple products.
• Code refactored.

Commits

• 2450214 1.6.0
• c8f10d5 Merge pull request #173 from johnjbarton/options-check
• 5a5aa59 Merge pull request #175 from yashLadha/master
• e92b624 src: updated minor version for release
• 6cb2734 feature(config): exit with info if missing username/password
• 5ec5e03 Merge pull request #158 from csvn/fix-configuration-options
• b83641a fix: make configuration options work again
• 76dbfd0 Merge pull request #169 from johnjbarton/node-version
• c7d3de5 chore(ci): run tests on modern node engines
• a1b7fa6 Merge pull request #167 from rchougule/readme_cap_fix
• Additional commits viewable in compare view

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[dependabot]

Dependabot tried to add @XhmikosR as a reviewer to this PR, but received the following error from GitHub:

POST https://api.github.com/repos/kyletsang/bootstrap/pulls/3/requested_reviewers: 422 - Reviews may only be requested from collaborators. One or more of the users or teams you specified is not a collaborator of the kyletsang/bootstrap repository. // See: https://developer.github.com/v3/pulls/review_requests/#create-a-review-request

[dependabot]

The following labels could not be found: dependencies, v5.

[coveralls]

Pull Request Test Coverage Report for Build 437776025

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 94.332%

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Totals
Change from base Build 422088021:	0.0%
Covered Lines:	1884
Relevant Lines:	1951

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💛 - Coveralls