chore(deps): update codecov/codecov-action action to v5.0.3

Author: renovate[bot]

.github/workflows/python-ci.yml

@@ -73,7 +73,7 @@ jobs:
       - name: Test SpectraFit
         run: poetry run pytest
       - name: Codecov
-        uses: codecov/[email protected].2
+        uses: codecov/[email protected].3
         with:
           name: codecov-umbrella
           flags: unittests