fix(deps) Update codecov/codecov-action action to v4

Author: renovate[bot]

.github/workflows/test.yaml

@@ -56,7 +56,7 @@ jobs:
     - name: test
       run: poetry run tox -e test
     - name: upload cov
-      uses: codecov/codecov-action@v3
+      uses: codecov/codecov-action@v4
       with:
         files: ./coverage.xml
         verbose: true