Require Python >= 3.9

References:
* casework/CASE-Utilities-Python#127

Signed-off-by: Alex Nelson <[email protected]>

Author: ajnelson-nist

.github/workflows/build.yml

@@ -48,8 +48,10 @@ jobs:
       matrix:
         # Test oldest and most current supported versions, per:
         # https://www.python.org/downloads/
+        # and:
+        # https://github.com/casework/CASE-Utilities-Python/blob/main/setup.cfg
         python-version:
-          - '3.8'
+          - '3.9'
           - '3.11'
     steps: