Fix CI: Don't fail on Codecov upload errors

The tests are passing but CI was failing due to missing Codecov token.
Set fail_ci_if_error to false since coverage upload is optional.

Author: ltawfik

.github/workflows/test.yml

@@ -34,4 +34,4 @@ jobs:
       uses: codecov/codecov-action@v4
       with:
         file: ./coverage.xml
-        fail_ci_if_error: true
+        fail_ci_if_error: false