Add dynaconf to requirements

setup.py

@@ -80,6 +80,7 @@ setup(
         "astcheck==0.2.5",
         "astsearch==0.2.0",
         "dill==0.3.0",
+        "dynaconf==3.1.4",
         "extra_data==1.4.1",
         "extra_geom==1.1.1",
         "gitpython==3.1.0",