chore(deps): bump actions/download-artifact from 5 to 6 (#35856)

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 5 to 6.
<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>v6.0.0</h2>
<h2>What's Changed</h2>
<p><strong>BREAKING CHANGE:</strong> this update supports Node <code>v24.x</code>. This is not a breaking change per-se but we're treating it as such.</p>
<ul>
<li>Update README for download-artifact v5 changes by <a href="https://github.com/yacaovsnc"><code>@​yacaovsnc</code></a> in <a href="https://github.com/actions/download-artifact/pull/417">actions/download-artifact#417</a></li>
<li>Update README with artifact extraction details by <a href="https://github.com/yacaovsnc"><code>@​yacaovsnc</code></a> in <a href="https://github.com/actions/download-artifact/pull/424">actions/download-artifact#424</a></li>
<li>Readme: spell out the first use of GHES by <a href="https://github.com/danwkennedy"><code>@​danwkennedy</code></a> in <a href="https://github.com/actions/download-artifact/pull/431">actions/download-artifact#431</a></li>
<li>Bump <code>@actions/artifact</code> to <code>v4.0.0</code></li>
<li>Prepare <code>v6.0.0</code> by <a href="https://github.com/danwkennedy"><code>@​danwkennedy</code></a> in <a href="https://github.com/actions/download-artifact/pull/438">actions/download-artifact#438</a></li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a href="https://github.com/danwkennedy"><code>@​danwkennedy</code></a> made their first contribution in <a href="https://github.com/actions/download-artifact/pull/431">actions/download-artifact#431</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a href="https://github.com/actions/download-artifact/compare/v5...v6.0.0">https://github.com/actions/download-artifact/compare/v5...v6.0.0</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/actions/download-artifact/commit/018cc2cf5baa6db3ef3c5f8a56943fffe632ef53"><code>018cc2c</code></a> Merge pull request <a href="https://github.com/actions/download-artifact/issues/438">#438</a> from actions/danwkennedy/prepare-6.0.0</li>
<li><a href="https://github.com/actions/download-artifact/commit/815651c680ffe1c95719d0ed08aba1a2f9d5c177"><code>815651c</code></a> Revert &quot;Remove <code>github.dep.yml</code>&quot;</li>
<li><a href="https://github.com/actions/download-artifact/commit/bb3a066a8babc8ed7b3e4218896c548fe34e7115"><code>bb3a066</code></a> Remove <code>github.dep.yml</code></li>
<li><a href="https://github.com/actions/download-artifact/commit/fa1ce46bbd11b8387539af12741055a76dfdf804"><code>fa1ce46</code></a> Prepare <code>v6.0.0</code></li>
<li><a href="https://github.com/actions/download-artifact/commit/4a24838f3d5601fd639834081e118c2995d51e1c"><code>4a24838</code></a> Merge pull request <a href="https://github.com/actions/download-artifact/issues/431">#431</a> from danwkennedy/patch-1</li>
<li><a href="https://github.com/actions/download-artifact/commit/5e3251c4ff5a32e4cf8dd4adaee0e692365237ae"><code>5e3251c</code></a> Readme: spell out the first use of GHES</li>
<li><a href="https://github.com/actions/download-artifact/commit/abefc31eafcfbdf6c5336127c1346fdae79ff41c"><code>abefc31</code></a> Merge pull request <a href="https://github.com/actions/download-artifact/issues/424">#424</a> from actions/yacaovsnc/update_readme</li>
<li><a href="https://github.com/actions/download-artifact/commit/ac43a6070aa7db8a41e756e7a2846221edca7027"><code>ac43a60</code></a> Update README with artifact extraction details</li>
<li><a href="https://github.com/actions/download-artifact/commit/de96f4613b77ec03b5cf633e7c350c32bd3c5660"><code>de96f46</code></a> Merge pull request <a href="https://github.com/actions/download-artifact/issues/417">#417</a> from actions/yacaovsnc/update_readme</li>
<li><a href="https://github.com/actions/download-artifact/commit/7993cb44e9052f2f08f9b828ae5ef3ecca7d2ac7"><code>7993cb4</code></a> Remove migration guide for artifact download changes</li>
<li>Additional commits viewable in <a href="https://github.com/actions/download-artifact/compare/v5...v6">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=5&new-version=6)](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores)

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</details>

Author: dependabot[bot]

.github/workflows/codecov-upload.yml

@@ -23,7 +23,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v5
       - name: Download Artifacts
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           name: coverage-artifacts
           path: ./packages/aws-cdk-lib/core/coverage

.github/workflows/spec-update.yml

@@ -85,12 +85,12 @@ jobs:
       CI: "true"
     steps:
       - name: Download base database
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           name: db.base.json.gz
           path: base
       - name: Download head database
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           name: db.head.json.gz
           path: head
@@ -128,7 +128,7 @@ jobs:
         uses: actions/checkout@v5
 
       - name: Download patch
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           name: update-spec.patch
           path: ${{ runner.temp }}
@@ -137,7 +137,7 @@ jobs:
         run: '[ -s ${{ runner.temp }}/update-spec.patch ] && git apply ${{ runner.temp }}/update-spec.patch || echo "Empty patch. Skipping."'
 
       - name: Download PR body file
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           name: PR.md
           path: ${{ runner.temp }}

.github/workflows/update-metadata-regions.yml

@@ -50,7 +50,7 @@ jobs:
         uses: actions/checkout@v5
 
       - name: Download patch
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           name: update-spec.patch
           path: ${{ runner.temp }}

.github/workflows/yarn-upgrade-need-manual-work.yml

@@ -83,7 +83,7 @@ jobs:
         uses: actions/checkout@v5
 
       - name: Download patch
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           name: upgrade.patch
           path: ${{ runner.temp }}

.github/workflows/yarn-upgrade.yml

@@ -97,7 +97,7 @@ jobs:
         uses: actions/checkout@v5
 
       - name: Download patch
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           name: upgrade.patch
           path: ${{ runner.temp }}