Bump actions/download-artifact from 7 to 8

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>

Author: dependabot[bot]

.github/workflows/continuous-deployment.yml

@@ -163,7 +163,7 @@ jobs:
     steps:
       - id: fetch
         name: Fetch artifact
-        uses: actions/download-artifact@v7
+        uses: actions/download-artifact@v8
         with:
           name: build-${{ github.run_number }}
           path: ./dist

.github/workflows/docs.yaml

@@ -48,7 +48,7 @@ jobs:
     if: ${{ github.ref_name == 'main' }}
     steps:
       - name: Download release candidate
-        uses: actions/download-artifact@v7
+        uses: actions/download-artifact@v8
         with:
           name: release-candidate
           path: ./docs/