Feature/browsertools

[coverbeck]

Description
Fix broken browser tools installation. See CircleCI-Public/browser-tools-orb#75.

Review Instructions
Builds on CircleCI should pass.

Issue
None

Security
If there are any concerns that require extra attention from the security team, highlight them here.

Please make sure that you've checked the following before submitting your pull request. Thanks!

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[coverbeck]

Note: accessiblity_test_base is failing because master is pointing to expired CircleCi artifacts