Specify django-modelcluster >=5.0.2 to avoid django-taggit dependency issues

setup.py

@@ -22,7 +22,7 @@ except ImportError:
 
 install_requires = [
     "Django>=2.2,<3.2",
-    "django-modelcluster>=5.0,<6.0",
+    "django-modelcluster>=5.0.2,<6.0",
     "django-taggit>=1.0,<2.0",
     "django-treebeard>=4.2.0,<5.0",
     "djangorestframework>=3.11.1,<4.0",