Bump actions/download-artifact from 7 to 8 (#36)

Author: dependabot[bot]

.github/workflows/pypi.yml

@@ -97,7 +97,7 @@ jobs:
 
       # Fetch the built archives from the "build" job
       - name: Download built archives artifact
-        uses: actions/download-artifact@v7
+        uses: actions/download-artifact@v8
         with:
           name: pypi-${{ github.sha }}
           path: dist