Re-add Python 3.9 in Ubuntu CI, edt now supports py39
@@ -16,7 +16,7 @@ jobs:
strategy:
max-parallel: 4
matrix:
- python-version: [3.7, 3.8]
+ python-version: [3.7, 3.8, 3.9]
operating-system: [ubuntu-latest]
steps:
