Merge pull request #8535 from pytest-dev/dependabot/pip/testing/plugins_integration/django-3.1.8

Bump django from 3.1.7 to 3.1.8 in /testing/plugins_integration

Author: nicoddemus

testing/plugins_integration/requirements.txt

@@ -1,5 +1,5 @@
 anyio[curio,trio]==2.2.0
-django==3.1.7
+django==3.1.8
 pytest-asyncio==0.14.0
 pytest-bdd==4.0.2
 pytest-cov==2.11.1