chore: enable tokenless Codecov uploads (#1620)

Refs: https://docs.codecov.com/docs/codecov-tokens#uploading-without-a-token

Author: targos

.github/workflows/coverage-linux.yml

@@ -63,7 +63,6 @@ jobs:
         run: |
           npm run report-coverage-xml
       - name: Upload
-        uses: codecov/codecov-action@5c47607acb93fed5485fdbf7232e8a31425f672a  # v5.0.2
+        uses: codecov/codecov-action@015f24e6818733317a2da2edd6290ab26238649a  # v5.0.7
         with:
           directory: ./coverage-xml
-          token: ${{ secrets.CODECOV_TOKEN }} # To bypass public API rate limiting, see https://github.com/codecov/codecov-action/issues/557