Bump actions/download-artifact from 2 to 4.1.7 in /.github/workflows

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 2 to 4.1.7.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v2...v4.1.7)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/nightly.yml

@@ -46,7 +46,7 @@ jobs:
         run: python3 scripts/extract_changelog.py DEV > generated-changelog.md
 
       - name: Download artifacts
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4.1.7
 
       - name: Prepare release name
         run: |

.github/workflows/release.yml

@@ -67,7 +67,7 @@ jobs:
         run: python3 scripts/extract_changelog.py ${{ needs.set-env.outputs.tag }} > generated-changelog.md
 
       - name: Download artifacts
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4.1.7
 
       - name: Create release
         uses: ncipollo/release-action@v1
@@ -87,7 +87,7 @@ jobs:
     if: ${{ !fromJSON(needs.set-env.outputs.prerelease) }}
     steps:
       - name: Download archive
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4.1.7
       - name: Install twine
         run: python -m pip install twine
       - name: Upload wheel