ci-experiments - Change maxima compile

Author: EJMFarrow

.github/workflows/moodle-ci.yml

@@ -35,7 +35,7 @@ jobs:
           - php: '8.2'
             moodle-branch: 'MOODLE_500_STABLE'
             database: 'pgsql'
-            maxima: 'GCL'
+            maxima: 'SBCL'
             moodle-app: true
 
     steps: