Remove sanic v22 pin (#1819)

Author: sl0thentr0py

tox.ini

@@ -208,11 +208,11 @@ deps =
     sanic-v19: sanic>=19.0,<20.0
     sanic-v20: sanic>=20.0,<21.0
     sanic-v21: sanic>=21.0,<22.0
-    sanic-v22: sanic>=22.0,<22.9.0
+    sanic-v22: sanic>=22.0
 
     sanic: aiohttp
     sanic-v21: sanic_testing<22
-    sanic-v22: sanic_testing<22.9.0
+    sanic-v22: sanic_testing>=22
     {py3.5,py3.6}-sanic: aiocontextvars==0.2.1
     py3.5-sanic: ujson<4