Update marshmallow from 3.6.1 to 3.7.1

pyup-bot · pyup-bot · commit 9a42f98b4972 · 2020-07-20T16:35:55.000+02:00
diff --git a/requirements.txt b/requirements.txt
@@ -2,5 +2,5 @@ Flask-SQLAlchemy==2.4.3
 SQLAlchemy==1.3.18
 Flask-Script==2.0.6
 py-ms[all]==2.6.0
-marshmallow==3.6.1
+marshmallow==3.7.1
 marshmallow-sqlalchemy==0.23.1
