Update codecov/codecov-action action to v5

Author: renovate[bot]

.github/workflows/python-package.yml

@@ -41,7 +41,7 @@ jobs:
       run: |
         pytest --cov=qsurface tests/ --cov-report=xml -m "not plotting"
     - name: Upload coverage to Codecov
-      uses: codecov/codecov-action@v1
+      uses: codecov/codecov-action@v5
       with:
         file: ./coverage.xml
         flags: unittests