CI update to codecov v5.0.0

Author: MatthewSZhang

.github/workflows/ci.yml

@@ -47,7 +47,7 @@ jobs:
       run: |
         FMT=xml pixi run test-coverage
     - name: Upload coverage reports to Codecov
-      uses: codecov/codecov-action@v4.6.0
+      uses: codecov/codecov-action@v5.0.0
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
     - name: Build SDist