Python version has to be a string from now on

Author: ecomodeller

.github/workflows/python-publish.yml

@@ -15,7 +15,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest]
-        python-version: [3.10, "3.13"]
+        python-version: ["3.10", "3.13"]
 
     steps:
     - uses: actions/checkout@v4