try something

.github/workflows/test.yml

@@ -71,6 +71,9 @@ jobs:
 
         # https://docs.github.com/en/actions/using-jobs/using-a-matrix-for-your-jobs#expanding-or-adding-matrix-configurations
         include:
+          - evm-version: shanghai
+            memorymock: false
+
           # test default settings with 3.11 across all supported evm versions
           - debug: false
             opt-mode: gas