Add gurobi 11

Maybe to merge before the externals which would install only gurobi 11, I suppose

ci/setup_spack.sh

@@ -81,7 +81,7 @@ fi
 
 if [ -d "${STACK_CONFIG_PATH}/licenses" ]
 then
-  cp -r "${STACK_CONFIG_PATH}/licenses/*" ${STACK_LOCATION}/spack/etc/spack
+  cp -r "${STACK_CONFIG_PATH}/licenses" ${STACK_LOCATION}/spack/etc/spack
 fi