Update ci.yml

Author: shankarpandala

.github/workflows/ci.yml

@@ -16,7 +16,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ${{ matrix.python-version }}
+        python-version: [3.8, 3.9, 3.10, 3.11, 3.12, 3.13]
       fail-fast: false
 
     steps: