⬆️ Bump dawidd6/action-download-artifact from 7 to 8 (#327)

Bumps [dawidd6/action-download-artifact](https://github.com/dawidd6/action-download-artifact) from 7 to 8.
- [Release notes](https://github.com/dawidd6/action-download-artifact/releases)
- [Commits](dawidd6/action-download-artifact@v7...v8)

---
updated-dependencies:
- dependency-name: dawidd6/action-download-artifact
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/ci.yml

@@ -40,7 +40,7 @@ jobs:
           julia --project=lectures --threads auto -e 'using Pkg; Pkg.instantiate();'
       # Download Jupyter Book Cache
       - name: Download "build" folder (cache)
-        uses: dawidd6/action-download-artifact@v7
+        uses: dawidd6/action-download-artifact@v8
         with:
           workflow: cache.yml
           branch: main

.github/workflows/publish.yml

@@ -43,7 +43,7 @@ jobs:
           julia --project=lectures --threads auto -e 'using Pkg; Pkg.instantiate();'
       # Download Jupyter Book Cache
       - name: Download "build" folder (cache)
-        uses: dawidd6/action-download-artifact@v7
+        uses: dawidd6/action-download-artifact@v8
         with:
           workflow: cache.yml
           branch: main