chore(deps): update codecov/codecov-action action to v5

Author: renovate[bot]

.github/workflows/ci.yaml

@@ -65,7 +65,7 @@ jobs:
 
     - name: Upload coverage to Codecov
       if: matrix.os == 'ubuntu-latest' && matrix.python-version == '3.14'
-      uses: codecov/codecov-action@v4
+      uses: codecov/codecov-action@v5
       with:
         file: ./coverage.xml
         flags: unittests