Allow artifact upload on workflow_dispatch event

Author: davidhjp01

.github/workflows/ci-main.yml

@@ -82,7 +82,7 @@ jobs:
           python -m build --sdist
           twine check --strict ./dist/*
       - uses: actions/upload-artifact@v4
-        if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags/v')
+        if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags/v') || github.event_name == 'workflow_dispatch'
         name: Upload artifact (source)
         with:
           name: libcosimpy-${{ github.ref_name }}-source