Bump actions/download-artifact from 3 to 4 (#328)

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 3 to 4.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@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/pythonpublish.yaml

@@ -53,7 +53,7 @@ jobs:
         name: Install Python
         with:
           python-version: 3.8
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: releases
           path: dist
@@ -65,7 +65,7 @@ jobs:
     needs: test-built-dist
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: releases
           path: dist
@@ -81,7 +81,7 @@ jobs:
     if: "!github.event.release.prerelease"
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: releases
           path: dist