chore(deps): update codecov/codecov-action action to v6

Author: renovate[bot]

.github/workflows/test_and_build.yml

@@ -53,7 +53,7 @@ jobs:
           uv run coverage run --source cognite.extractorutils -m pytest -v tests
           uv run coverage xml
 
-      - uses: codecov/codecov-action@v5
+      - uses: codecov/codecov-action@v6
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           file: ./coverage.xml