test: minimize test matrix

Author: lsorber

.github/workflows/test.yml

@@ -10,7 +10,7 @@ jobs:
     strategy:
       matrix:
         python-version: ["3.8", "3.11"]
-        cuda-version: ["11.8", "12.2"]
+        cuda-version: ["11.8"]
 
     steps:
     - name: Checkout