build(deps): bump qs and testcafe-browser-provider-saucelabs in /examples/running-tests-using-travis-and-saucelabs (#8490)

Removes [qs](https://github.com/ljharb/qs). It's no longer used after
updating ancestor dependency
[testcafe-browser-provider-saucelabs](https://github.com/DevExpress/testcafe-browser-provider-saucelabs).
These dependencies need to be updated together.

Removes `qs`

Updates `testcafe-browser-provider-saucelabs` from 1.9.0 to 3.0.0
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/DevExpress/testcafe-browser-provider-saucelabs/releases">testcafe-browser-provider-saucelabs's
releases</a>.</em></p>
<blockquote>
<h2>v3.0.0</h2>
<h2>What's Changed</h2>
<ul>
<li>build: added /.builds in gitignore by <a
href="https://github.com/Aleksey28"><code>@​Aleksey28</code></a> in <a
href="https://redirect.github.com/DevExpress/testcafe-browser-provider-saucelabs/pull/85">DevExpress/testcafe-browser-provider-saucelabs#85</a></li>
<li>fix: get rid of <code>request</code> dependency by <a
href="https://github.com/aleks-pro"><code>@​aleks-pro</code></a> in <a
href="https://redirect.github.com/DevExpress/testcafe-browser-provider-saucelabs/pull/86">DevExpress/testcafe-browser-provider-saucelabs#86</a></li>
<li>build: added package-lock.json by <a
href="https://github.com/Aleksey28"><code>@​Aleksey28</code></a> in <a
href="https://redirect.github.com/DevExpress/testcafe-browser-provider-saucelabs/pull/87">DevExpress/testcafe-browser-provider-saucelabs#87</a></li>
<li>build: updated saucelabs-connector by <a
href="https://github.com/Aleksey28"><code>@​Aleksey28</code></a> in <a
href="https://redirect.github.com/DevExpress/testcafe-browser-provider-saucelabs/pull/92">DevExpress/testcafe-browser-provider-saucelabs#92</a></li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a href="https://github.com/aleks-pro"><code>@​aleks-pro</code></a>
made their first contribution in <a
href="https://redirect.github.com/DevExpress/testcafe-browser-provider-saucelabs/pull/86">DevExpress/testcafe-browser-provider-saucelabs#86</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/DevExpress/testcafe-browser-provider-saucelabs/compare/v2.0.0...v3.0.0">https://github.com/DevExpress/testcafe-browser-provider-saucelabs/compare/v2.0.0...v3.0.0</a></p>
<h2>v2.0.0</h2>
<h2>What's Changed</h2>
<ul>
<li>Add SAUCE_CONNECT_OVERRIDES_PATH by <a
href="https://github.com/sdotson"><code>@​sdotson</code></a> in <a
href="https://redirect.github.com/DevExpress/testcafe-browser-provider-saucelabs/pull/75">DevExpress/testcafe-browser-provider-saucelabs#75</a></li>
<li>test by <a
href="https://github.com/Aleksey28"><code>@​Aleksey28</code></a> in <a
href="https://redirect.github.com/DevExpress/testcafe-browser-provider-saucelabs/pull/82">DevExpress/testcafe-browser-provider-saucelabs#82</a></li>
<li>build: updated babel by <a
href="https://github.com/Aleksey28"><code>@​Aleksey28</code></a> in <a
href="https://redirect.github.com/DevExpress/testcafe-browser-provider-saucelabs/pull/83">DevExpress/testcafe-browser-provider-saucelabs#83</a></li>
<li>Migrate asset retrieval to platforms API by <a
href="https://github.com/alexplischke"><code>@​alexplischke</code></a>
in <a
href="https://redirect.github.com/DevExpress/testcafe-browser-provider-saucelabs/pull/81">DevExpress/testcafe-browser-provider-saucelabs#81</a></li>
<li>feat: added publish workflow by <a
href="https://github.com/Aleksey28"><code>@​Aleksey28</code></a> in <a
href="https://redirect.github.com/DevExpress/testcafe-browser-provider-saucelabs/pull/84">DevExpress/testcafe-browser-provider-saucelabs#84</a></li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a href="https://github.com/sdotson"><code>@​sdotson</code></a> made
their first contribution in <a
href="https://redirect.github.com/DevExpress/testcafe-browser-provider-saucelabs/pull/75">DevExpress/testcafe-browser-provider-saucelabs#75</a></li>
<li><a href="https://github.com/Aleksey28"><code>@​Aleksey28</code></a>
made their first contribution in <a
href="https://redirect.github.com/DevExpress/testcafe-browser-provider-saucelabs/pull/82">DevExpress/testcafe-browser-provider-saucelabs#82</a></li>
<li><a
href="https://github.com/alexplischke"><code>@​alexplischke</code></a>
made their first contribution in <a
href="https://redirect.github.com/DevExpress/testcafe-browser-provider-saucelabs/pull/81">DevExpress/testcafe-browser-provider-saucelabs#81</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/DevExpress/testcafe-browser-provider-saucelabs/compare/v1.8.3...v2.0.0">https://github.com/DevExpress/testcafe-browser-provider-saucelabs/compare/v1.8.3...v2.0.0</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li>See full diff in <a
href="https://github.com/DevExpress/testcafe-browser-provider-saucelabs/commits/v3.0.0">compare
view</a></li>
</ul>
</details>
<details>
<summary>Maintainer changes</summary>
<p>This version was pushed to npm by <a
href="https://www.npmjs.com/~kirovboris">kirovboris</a>, a new releaser
for testcafe-browser-provider-saucelabs since your current version.</p>
</details>
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