Update dependency karma-sauce-launcher to v4

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
karma-sauce-launcher	devDependencies	major	1.2.0 -> 4.1.5

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Release Notes

karma-runner/karma-sauce-launcher

v4.1.5

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Bug Fixes

• Update sauce lib (#​207) (7e75e17)

v4.1.4

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Bug Fixes

• remove heartbeat function (#​205) (10e93cc)

v4.1.3

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Bug Fixes

• release: Replace calls to renamed .title() with .getTitle() (b1c589b)

v4.1.2

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Bug Fixes

• no need to copy package.json to dist (#​196) (65210f2)

v4.1.1

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Bug Fixes

• add files field to package.json (#​194) (f99a0e1)

v4.1.0

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Features

• release: add build step to semantic-release in Travis (#​192) (d4f7649)

v4.0.0

chore

• release: force-trigger a semantic release (#​189) (64217e4)

BREAKING CHANGES

• release: Drop support for Node <10.

v2.0.2

Bug Fixes

• Fix misplaced try/catch not catching kill errors (dcda7b5)

v2.0.1

Bug Fixes

• Allow reconnecting if Saucelabs terminated session (6a9768da)

v2.0.0

Compare Source

chore

• deps: Support node 6,8,10 (2ef4585)

BREAKING CHANGES

• deps: Drop support for node < 6

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