ci(deps): bump actions/download-artifact from 3 to 4 (#551)

Bumps
[actions/download-artifact](https://github.com/actions/download-artifact)
from 3 to 4.
<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>v4.0.0</h2>
<h2>What's Changed</h2>
<p>The release of upload-artifact@v4 and download-artifact@v4 are major
changes to the backend architecture of Artifacts. They have numerous
performance and behavioral improvements.</p>
<p>ℹ️ However, this is a major update that includes breaking changes.
Artifacts created with versions v3 and below are not compatible with the
v4 actions. Uploads and downloads <em>must</em> use the same major
actions versions. There are also key differences from previous versions
that may require updates to your workflows.</p>
<p>For more information, please see:</p>
<ol>
<li>The <a
href="https://github.blog/changelog/2023-12-14-github-actions-artifacts-v4-is-now-generally-available/">changelog</a>
post.</li>
<li>The <a
href="https://github.com/actions/download-artifact/blob/main/README.md">README</a>.</li>
<li>The <a
href="https://github.com/actions/upload-artifact/blob/main/docs/MIGRATION.md">migration
documentation</a>.</li>
<li>As well as the underlying npm package, <a
href="https://github.com/actions/toolkit/tree/main/packages/artifact"><code>@​actions/artifact</code></a>
documentation.</li>
</ol>
<h2>New Contributors</h2>
<ul>
<li><a href="https://github.com/bflad"><code>@​bflad</code></a> made
their first contribution in <a
href="https://github.com/actions/download-artifact/pull/194">actions/download-artifact#194</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/actions/download-artifact/compare/v3...v4.0.0">https://github.com/actions/download-artifact/compare/v3...v4.0.0</a></p>
<h2>v3.0.2</h2>
<ul>
<li>Bump <code>@actions/artifact</code> to v1.1.1 - <a
href="https://github.com/actions/download-artifact/pull/195">actions/download-artifact#195</a></li>
<li>Fixed a bug in Node16 where if an HTTP download finished too quickly
(&lt;1ms, e.g. when it's mocked) we attempt to delete a temp file that
has not been created yet <a
href="hhttps://github.com/actions/toolkit/pull/1278">actions/toolkit#1278</a></li>
</ul>
<h2>v3.0.1</h2>
<ul>
<li><a
href="https://github.com/actions/download-artifact/pull/178">Bump
<code>@​actions/core</code> to 1.10.0</a></li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/actions/download-artifact/commit/fa0a91b85d4f404e444e00e005971372dc801d16"><code>fa0a91b</code></a>
Merge pull request <a
href="https://github.com/actions/download-artifact/issues/341">#341</a>
from actions/robherley/bump-pkgs</li>
<li><a
href="https://github.com/actions/download-artifact/commit/b54d0883e196647f43ce531a3fc13b246cf908b6"><code>b54d088</code></a>
Update <code>@​actions/artifact</code> version, bump dependencies</li>
<li><a
href="https://github.com/actions/download-artifact/commit/65a9edc5881444af0b9093a5e628f2fe47ea3b2e"><code>65a9edc</code></a>
Merge pull request <a
href="https://github.com/actions/download-artifact/issues/325">#325</a>
from bethanyj28/main</li>
<li><a
href="https://github.com/actions/download-artifact/commit/fdd1595981c1a29187d3de99c28c28a166bc38f7"><code>fdd1595</code></a>
licensed</li>
<li><a
href="https://github.com/actions/download-artifact/commit/c13dba102f4bb92b3f679fa086db9e2973960ca7"><code>c13dba1</code></a>
update <code>@​actions/artifact</code> dependency</li>
<li><a
href="https://github.com/actions/download-artifact/commit/0daa75ebeac4617faeb127496dbd716b8bcce26e"><code>0daa75e</code></a>
Merge pull request <a
href="https://github.com/actions/download-artifact/issues/324">#324</a>
from actions/eggyhead/use-artifact-v2.1.6</li>
<li><a
href="https://github.com/actions/download-artifact/commit/9c19ed7fe5d278cd354c7dfd5d3b88589c7e2395"><code>9c19ed7</code></a>
Merge branch 'main' into eggyhead/use-artifact-v2.1.6</li>
<li><a
href="https://github.com/actions/download-artifact/commit/3d3ea8741ef44e86f7392b41e391bde3c36219bd"><code>3d3ea87</code></a>
updating license</li>
<li><a
href="https://github.com/actions/download-artifact/commit/89af5db8211998d3ca691103a86b0b9362a94286"><code>89af5db</code></a>
updating artifact package v2.1.6</li>
<li><a
href="https://github.com/actions/download-artifact/commit/b4aefff88e83a2676a730654e1ce3dce61880379"><code>b4aefff</code></a>
Merge pull request <a
href="https://github.com/actions/download-artifact/issues/323">#323</a>
from actions/eggyhead/update-artifact-v215</li>
<li>Additional commits viewable in <a
href="https://github.com/actions/download-artifact/compare/v3...v4">compare
view</a></li>
</ul>
</details>
<br />


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</details>

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.github/workflows/ci.yml

@@ -252,7 +252,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: py-coverage
           path: coverage.xml