Update python version for github workflow

Author: romain-fontugne

.github/workflows/main.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.10, 3.13]
+        python-version: '3.13'
 
     steps:
       - uses: actions/checkout@v2