ci: bump actions/download-artifact from 7 to 8 (#23)

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 7 to 8.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v7...v8)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: '8'
  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>

Author: dependabot[bot]

.github/workflows/release.yml

@@ -588,7 +588,7 @@ jobs:
         uses: actions/checkout@v6
 
       - name: Download all artifacts
-        uses: actions/download-artifact@v7
+        uses: actions/download-artifact@v8
         with:
           merge-multiple: true
 
@@ -642,7 +642,7 @@ jobs:
           ./scripts/release/generate_changelog.sh --notes-only > release-notes.md
 
       - name: Download all artifacts
-        uses: actions/download-artifact@v7
+        uses: actions/download-artifact@v8
         with:
           merge-multiple: true
 

.github/workflows/screenshots.yml

@@ -253,13 +253,13 @@ jobs:
           xcode-version: 'latest-stable'
 
       - name: Download iOS screenshots
-        uses: actions/download-artifact@v7
+        uses: actions/download-artifact@v8
         with:
           name: screenshots-ios
           path: screenshots/
 
       - name: Download macOS screenshots
-        uses: actions/download-artifact@v7
+        uses: actions/download-artifact@v8
         with:
           name: screenshots-macos
           path: screenshots/macOS/