fix: use PyPI token publish fallback

.github/workflows/publish-pypi.yml

@@ -53,8 +53,6 @@ jobs:
     name: Publish to PyPI
     needs: build
     runs-on: ubuntu-latest
-    permissions:
-      id-token: write
     environment:
       name: pypi
       url: https://pypi.org/p/batdetect2
@@ -68,3 +66,5 @@ jobs:
 
       - name: Publish to PyPI
         uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          password: ${{ secrets.PYPI_API_TOKEN }}