Bump actions/download-artifact from 2.1.0 to 3 (#208)

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 2.1.0 to 3.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/actions/download-artifact/releases">actions/download-artifact's releases</a>.</em></p>
<blockquote>
<h2>v3.0.0</h2>
<h2>What's Changed</h2>
<ul>
<li>Update default runtime to node16 (<a href="https://github-redirect.dependabot.com/actions/download-artifact/pull/134">actions/download-artifact#134</a>)</li>
<li>Update package-lock.json file version to 2 (<a href="https://github-redirect.dependabot.com/actions/download-artifact/pull/136">actions/download-artifact#136</a>)</li>
</ul>
<h3>Breaking Changes</h3>
<p>With the update to Node 16, all scripts will now be run with Node 16 rather than Node 12.</p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/actions/download-artifact/commit/fb598a63ae348fa914e94cd0ff38f362e927b741"><code>fb598a6</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/actions/download-artifact/issues/136">#136</a> from actions/jtamsut/update-lockfile-version</li>
<li><a href="https://github.com/actions/download-artifact/commit/a4a09c5d7eb5932e0e6c4e77a434738189a24f1b"><code>a4a09c5</code></a> regenerate index.js</li>
<li><a href="https://github.com/actions/download-artifact/commit/9acf51df7946118a04918663acc5d955f49de177"><code>9acf51d</code></a> regenerate package lock</li>
<li><a href="https://github.com/actions/download-artifact/commit/882107232564f8bc8c5083706e009246f11aa871"><code>8821072</code></a> upgrade artifact version</li>
<li><a href="https://github.com/actions/download-artifact/commit/b8bbd3b64f298f12cfabf7d85ee4e716714eae3b"><code>b8bbd3b</code></a> regenerate lockfile</li>
<li><a href="https://github.com/actions/download-artifact/commit/6ee3d963e5a7ed7dac02925e126c37e459c36aa6"><code>6ee3d96</code></a> revert artifact version</li>
<li><a href="https://github.com/actions/download-artifact/commit/d4793f4e27ec52069836c96d310f815ffa48176c"><code>d4793f4</code></a> update docs for v3</li>
<li><a href="https://github.com/actions/download-artifact/commit/2d338d2145c33c497f1f4f574ca1eb88e1061a8e"><code>2d338d2</code></a> upgrade package to v3</li>
<li><a href="https://github.com/actions/download-artifact/commit/360d0830b5796c983178d8073e39063e8d32bc46"><code>360d083</code></a> update dependency on artifact lib</li>
<li><a href="https://github.com/actions/download-artifact/commit/d9b73cccacd09ac21cc34b82578e6cbb1b4e2539"><code>d9b73cc</code></a> update lock file</li>
<li>Additional commits viewable in <a href="https://github.com/actions/download-artifact/compare/v2.1.0...v3">compare view</a></li>
</ul>
</details>
<br />


[![Dependabot compatibility score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=actions/download-artifact&package-manager=github_actions&previous-version=2.1.0&new-version=3)](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores)

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</details>

.github/workflows/tests.yml

@@ -165,7 +165,7 @@ jobs:
                   nox --version
 
             - name: Download coverage data
-              uses: actions/download-artifact@v2.1.0
+              uses: actions/download-artifact@v3
               with:
                   name: coverage-data