Tweak CI

Author: Andrew Brookins

.github/workflows/ci.yml

@@ -72,7 +72,7 @@ jobs:
       matrix:
         os: [ ubuntu-latest ]
         pyver: [ 3.6, 3.7, 3.8, 3.9, pypy3 ]
-        redismod: [ "preview" ]  # Removed "edge" because it's broken currently
+        redismod: [ "preview" ]
       fail-fast: false
     services:
       redis: