Bump actions/download-artifact from 3 to 4 (#1213)

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 3 to 4.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](https://github.com/actions/download-artifact/compare/v3...v4)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/ci.yml

@@ -128,7 +128,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
 
       - name: Copy updated .json files
         if: github.event_name == 'schedule'
@@ -272,7 +272,7 @@ jobs:
       NOTES: ${{ github.event_name == 'release' && github.event.release.body || format('Nightly build, commit {0}', github.sha) }}
       BUCKET_DIR: ${{ github.event_name == 'release' && 'dl.kittycad.io/releases/modeling-app' || 'dl.kittycad.io/releases/modeling-app/nightly' }}
     steps:
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
 
       - name: Generate the update static endpoint
         run: |