drop testing python 3.11 from matrix.

Drop 3.11 to reduce test time.

3.13, 3.12, 3.10, 3.8, 3.6

Author: rouilj

.github/workflows/ci-test.yml

@@ -58,7 +58,7 @@ jobs:
           # - "3.8" run via include for ubuntu-22.04
           # - "3.9"
           - "3.10"
-          - "3.11"
+          # - "3.11"
           - "3.12"
 
         # use for multiple os or ubuntu versions