Revert "Comment PyPI publish condition in CI.yml"

This reverts commit c3d9e1b.

Author: bangseongbeom

.github/workflows/CI.yml

@@ -246,7 +246,7 @@ jobs:
         with:
           subject-path: 'wheels-*/*'
       - name: Publish to PyPI
-        # if: ${{ startsWith(github.ref, 'refs/tags/') }}
+        if: ${{ startsWith(github.ref, 'refs/tags/') }}
         uses: PyO3/maturin-action@v1
         with:
           command: upload