⬆️ Update codecov/codecov-action action to v7

Author: renovate[bot]

.github/workflows/tests.yaml

@@ -58,7 +58,7 @@ jobs:
           uv run coverage combine coverage*/.coverage*
           uv run coverage xml -i
       - name: 🚀 Upload coverage report
-        uses: codecov/codecov-action@v6.0.2
+        uses: codecov/codecov-action@v7.0.0
         with:
           fail_ci_if_error: true
           token: ${{ secrets.CODECOV_TOKEN }}