Scheduled biweekly dependency update for week 11 (#774)

* Update sphinx from 2.4.3 to 2.4.4
* Update faker from 4.0.1 to 4.0.2
* Update pytest from 5.3.5 to 5.4.1

Author: pyup-bot

requirements/requirements-documentation.txt

@@ -1,3 +1,3 @@
 recommonmark==0.6.0
-Sphinx==2.4.3
+Sphinx==2.4.4
 sphinx_rtd_theme==0.4.3

requirements/requirements-testing.txt

@@ -1,7 +1,7 @@
 django-debug-toolbar==2.2
 factory-boy==2.12.0
-Faker==4.0.1
-pytest==5.3.5
+Faker==4.0.2
+pytest==5.4.1
 pytest-cov==2.8.1
 pytest-django==3.8.0
 pytest-factoryboy==2.0.3