Bump aws-sdk from 2.1625.0 to 2.1626.0 (#932)

Bumps [aws-sdk](https://github.com/aws/aws-sdk-js) from 2.1625.0 to 2.1626.0.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/aws/aws-sdk-js/releases">aws-sdk's releases</a>.</em></p>
<blockquote>
<h2>Release v2.1626.0</h2>
<p>See <a href="https://github.com/aws/aws-sdk-js/blob/master/CHANGELOG.md">changelog</a> for more information.</p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/aws/aws-sdk-js/commit/dacfa24fdb6fd09fe1fab05c761118a48fe9066b"><code>dacfa24</code></a> Updates SDK to v2.1626.0</li>
<li><a href="https://github.com/aws/aws-sdk-js/commit/8fbfd577f215c7e039e0819b16d4c880e10e3f2e"><code>8fbfd57</code></a> fix: do not serialize empty lists in ec2 (<a href="https://redirect.github.com/aws/aws-sdk-js/issues/4639">#4639</a>)</li>
<li>See full diff in <a href="https://github.com/aws/aws-sdk-js/compare/v2.1625.0...v2.1626.0">compare view</a></li>
</ul>
</details>
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