Use token for coverage submission.

Author: maleadt

.github/workflows/ci.yml

@@ -46,6 +46,8 @@ jobs:
           directories: src,lib
       - uses: codecov/codecov-action@v4
         with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          fail_ci_if_error: false
           file: lcov.info
   docs:
     name: Documentation