[ci] Set minuit1=OFF for no-modules build to get test coverage

Author: guitargeek

.github/workflows/root-ci.yml

@@ -402,7 +402,7 @@ jobs:
           - image: alma9
             is_special: true
             property: modules_off
-            overrides: ["runtime_cxxmodules=Off"]
+            overrides: ["runtime_cxxmodules=OFF", "minuit1=OFF"]
           - image: alma9
             is_special: true
             property: march_native