Bump chrome-launcher and backstopjs

[dependabot[bot]]

Removes chrome-launcher. It's no longer used after updating ancestor dependency backstopjs. These dependencies need to be updated together.

Removes chrome-launcher

Updates backstopjs from 4.4.2 to 6.1.4

Release notes

Sourced from backstopjs's releases.

backstop remote now parses --config flag

Prior releases pinned backstop remote's config to <CWD>/backstop.js.

But now you can put this file anywhere with...

backstop remote --config=<path_to_your_config>

Default should fall back to <CWD>/backstop.js. If not -- please file a ticket.

see https://github.com/garris/BackstopJS/commit/36582ca77219a2d4a0117bafc54e6bbe42149ad9

Thanks!

Commits

• 83fee25 6.1.4
• 103c2c8 Document how to suppress firewall popups on macOS (#1423)
• 397bdb7 Allow to modify gotoParameters (#1444)
• aa4c2a4 Remote docs (#1445)
• 1018f68 Remove usage of deprecated/removed waitFor in clickAndHoverHelper scripts (fi...
• f27ec8f Remote compatibility with Windows (#1440)
• d30a75c 6.1.3
• e6cb1f1 fix docker build script
• 2009cad 6.1.2
• d9bc531 point ssws to the right NPM version
• Additional commits viewable in compare view

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[dependabot[bot]]

OK, I won't notify you again about this release, but will get in touch when a new version is available.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.