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

Author: renovate[bot]

.github/workflows/continuous-integration.yml

@@ -93,7 +93,7 @@ jobs:
       - name: Run unit tests
         run: pnpm test --coverage
       - name: Codecov Upload
-        uses: codecov/codecov-action@v5
+        uses: codecov/codecov-action@v6
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           files: coverage/cobertura-coverage.xml