build(deps): bump actions/upload-artifact from 4 to 6 (#108)

Author: 12rambau

.github/workflows/unit.yaml

@@ -73,7 +73,7 @@ jobs:
         if: ${{ matrix.python-version == '3.12' }}
         shell: bash
         run: nox -s dead-fixtures
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v6
         if: ${{ matrix.python-version == '3.12' }}
         with:
           name: coverage