updated workflow

Author: smythi93

.github/workflows/test-sflkit.yml

@@ -28,7 +28,7 @@ jobs:
       run: |
         python3 -m pytest --html=report.html --self-contained-html --cov-report xml:coverage.xml --cov-report term --cov-config=.coveragerc --cov=sflkit tests/
         python3 -m coverage lcov
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       with:
         name: Test Report
         path: report.html