add Python 3.9 to the CI

stephane-caron · stephane-caron · commit ab22c9f37a0a · 2023-01-19T13:53:03.000+01:00
diff --git a/.github/workflows/CI.yaml b/.github/workflows/CI.yaml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        python-version: [3.7, 3.8]
+        python-version: [3.7, 3.8, 3.9]
         os: [ubuntu-latest, windows-latest]
         include:
             - os: ubuntu-20.04
