Update pytest requirement to 7.*, pytest-mock to 3.8, pytest-rerunfailures to 10.2, pytest-xdist to 2.5

src/setup.py

@@ -248,11 +248,11 @@ setup(
             'pytest-cache',
             'pytest-cov',
             'pytest-django==4.*',
-            'pytest-mock>=2.0,<3.7',
-            'pytest-rerunfailures>=9,<11',
+            'pytest-mock==3.8.*',
+            'pytest-rerunfailures==10.2',
             'pytest-sugar',
-            'pytest-xdist==1.31.*',
-            'pytest==6.*',
+            'pytest-xdist==2.5.*',
+            'pytest==7.*',
             'responses',
         ],
         'memcached': ['pylibmc'],