Scheduled biweekly dependency update for week 40 (#988)

* Update black from 21.7b0 to 21.9b0
* Update sphinx from 4.1.2 to 4.2.0
* Update sphinx_rtd_theme from 0.5.2 to 1.0.0
* Update django-filter from 2.4.0 to 21.1
* Update faker from 8.11.0 to 8.14.1
* Update pytest from 6.2.4 to 6.2.5
* Update pytest-cov from 2.12.1 to 3.0.0

Author: pyup-bot

requirements/requirements-codestyle.txt

@@ -1,4 +1,4 @@
-black==21.7b0
+black==21.9b0
 flake8==3.9.2
 flake8-isort==4.0.0
 isort==5.9.3

requirements/requirements-documentation.txt

@@ -1,3 +1,3 @@
 recommonmark==0.7.1
-Sphinx==4.1.2
-sphinx_rtd_theme==0.5.2
+Sphinx==4.2.0
+sphinx_rtd_theme==1.0.0

requirements/requirements-optionals.txt

@@ -1,4 +1,4 @@
-django-filter==2.4.0
+django-filter==21.1
 django-polymorphic==3.0.0
 pyyaml==5.4.1
 uritemplate==3.0.1

requirements/requirements-testing.txt

@@ -1,8 +1,8 @@
 django-debug-toolbar==3.2.2
 factory-boy==3.2.0
-Faker==8.11.0
-pytest==6.2.4
-pytest-cov==2.12.1
+Faker==8.14.1
+pytest==6.2.5
+pytest-cov==3.0.0
 pytest-django==4.4.0
 pytest-factoryboy==2.1.0
 snapshottest==0.6.0