Fix issues in setup.py and Bump v2.2.1

Author: danialkeimasi

django_nextjs/__init__.py

@@ -1 +1 @@
-__version__ = "2.2.0"
+__version__ = "2.2.1"

setup.py

@@ -30,7 +30,7 @@
     download_url="https://github.com/QueraTeam/django-nextjs",
     packages=find_packages(".", include=("django_nextjs", "django_nextjs.*")),
     include_package_data=True,
-    install_requires=["Django >= 3.2, != 4.1.0", "requests", "aiohttp", "channels", "websockets"],
+    install_requires=["Django >= 3.2", "requests", "aiohttp", "channels", "websockets"],
     extras_require={"dev": dev_requirements},
     classifiers=[
         "Development Status :: 5 - Production/Stable",
@@ -41,7 +41,6 @@
         "Intended Audience :: Developers",
         "Operating System :: OS Independent",
         "Programming Language :: Python",
-        "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",