[setup] add scipy to the list of dependencies.

setup.cfg

@@ -25,6 +25,7 @@ install_requires =
    joblib==1.0.1
    matplotlib==3.4.2
    seaborn==0.11.1
+   scipy==1.7.3
    scikit-learn==0.24.2
    tqdm==4.61.1
    chaospy==4.3.3