FIX: python versions used in unit test

Author: kx79wq

.github/workflows/test.yml

@@ -10,7 +10,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python: [3.8, 3.9, 3.10, 3.11, 3.12]
+        python: ['3.8', '3.9', '3.10', '3.11', '3.12']
     runs-on: ${{ matrix.os }}
 
     steps: