ci: add prerelease for test

Author: zhukaihan

.github/workflows/publish-to-test-pypi.yml

@@ -53,6 +53,8 @@ jobs:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           push: false
           vcs_release: false
+          prerelease: true
+          prerelease_token: alpha
 
       - name: Publish to Test PyPI
         uses: pypa/gh-action-pypi-publish@ed0c53931b1dc9bd32cbe73a98c7f6766f8a527e # v1.13.0