Upgrade test dependencies

pytest: 6 → 7
pytest-cov: 2.7 → 4.1
pytest-django: 4.4 → 4.6
flake8: 3 → 6
pytest-flake8: 1.0 → 1.1
pytest-dotenv: 0.3 → 0.5
model-mommy: 1.6 → 2.0
frezegun: 0.3 → 1.2

interna/config/tests/test_robots.py

@@ -1,4 +1,3 @@
-from django.http import HttpResponse
 from django.test import Client
 
 

requirements.txt

@@ -19,14 +19,14 @@ commonmark>=0.9,<0.10
 django-extensions>=2,<3
 
 # Testing
-pytest>=6,<7
-pytest-cov>=2.7,<2.8
-pytest-django~=4.4.0
-flake8<4 # https://github.com/tholo/pytest-flake8/issues/81
-pytest-flake8~=1.0.7
-pytest-dotenv>=0.3,<0.4
-model-mommy>=1.6,<1.7
-freezegun>=0.3.9,<0.4
+pytest>=7,<8
+pytest-cov~=4.1.0
+pytest-django~=4.6.0
+flake8~=6.1.0
+pytest-flake8~=1.1.1
+pytest-dotenv~=0.5.2
+model-mommy~=2.0.0
+freezegun~=1.2.2
 
 # Deployment
 gunicorn>=21,<22