Update action version

Author: Serene-Arc

.github/workflows/test.yml

@@ -55,7 +55,7 @@ jobs:
         pytest -m "not slow" --verbose --cov=./bdfr/ --cov-report term:skip-covered --cov-report html
 
     - name: Upload coverage report
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: coverage_report
         path: htmlcov/