Merge pull request #5053 from learningequality/dependabot/pip/redis-6.1.0

Bump redis from 5.2.1 to 6.1.0

Author: rtibbles

requirements.txt

@@ -202,7 +202,7 @@ pytz==2022.1
     #   django
     #   django-postmark
     #   google-api-core
-redis==5.2.1
+redis==6.1.0
     # via
     #   -r requirements.in
     #   django-redis