Merge branch 'pypy' into 'master'

Add pypy testing

See merge request allianceauth/allianceauth!1474

tox.ini

@@ -2,7 +2,7 @@
 isolated_build = True
 skipsdist = true
 usedevelop = true
-envlist = py{38,39,310,311}-{all,core}, docs
+envlist = py{38,39,310,311,py}-{all,core}, docs
 
 [testenv]
 setenv =
@@ -13,6 +13,7 @@ basepython =
     py39: python3.9
     py310: python3.10
     py311: python3.11
+    pypy: pypy3
 deps=
     coverage
 install_command = pip install -e ".[test]" -U {opts} {packages}