Update coverage from 5.2.1 to 5.3

Author: pyup-bot

{{cookiecutter.project_slug}}/requirements/local.txt

@@ -27,7 +27,7 @@ sphinx-autobuild==2020.9.1 # https://github.com/GaretJax/sphinx-autobuild
 # ------------------------------------------------------------------------------
 flake8==3.8.3  # https://github.com/PyCQA/flake8
 flake8-isort==4.0.0  # https://github.com/gforcada/flake8-isort
-coverage==5.2.1  # https://github.com/nedbat/coveragepy
+coverage==5.3  # https://github.com/nedbat/coveragepy
 black==20.8b1  # https://github.com/ambv/black
 pylint-django==2.3.0  # https://github.com/PyCQA/pylint-django
 {%- if cookiecutter.use_celery == 'y' %}