Update marshmallow to 3.4.0#116

avara1986 merged 1 commit intomasterpython-microservices/microservices-scaffold:masterfrom

pyup-update-marshmallow-3.3.0-to-3.4.0python-microservices/microservices-scaffold:pyup-update-marshmallow-3.3.0-to-3.4.0Copy head branch name to clipboard