Bump redis from 3.2.1 to 3.3.5 in /requirements

Bumps [redis](https://github.com/andymccurdy/redis-py) from 3.2.1 to 3.3.5.
- [Release notes](https://github.com/andymccurdy/redis-py/releases)
- [Changelog](https://github.com/andymccurdy/redis-py/blob/master/CHANGES)
- [Commits](https://github.com/andymccurdy/redis-py/compare/3.2.1...3.3.5)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

requirements/common.txt

@@ -206,9 +206,9 @@ django-redis==4.10.0 \
     --hash=sha256:f46115577063d00a890867c6964ba096057f07cb756e78e0503b89cd18e4e083
 
 # Required by django-redis
-redis==3.2.1 \
-    --hash=sha256:6946b5dca72e86103edc8033019cc3814c031232d339d5f4533b02ea85685175 \
-    --hash=sha256:8ca418d2ddca1b1a850afa1680a7d2fd1f3322739271de4b704e0d4668449273
+redis==3.3.5 \
+    --hash=sha256:95ccbec607e21fff2823e7da8b7041e0c471eb36d0672f20abcb32adb5b089ca \
+    --hash=sha256:8106502b96280e8614d30766f28b4e07ca2b368a8d7896bffce9de88756dd481
 
 elasticsearch==7.0.2 \
     --hash=sha256:d1b176b87a7fb75dca82978c82a4023e8b21cbc98f4018cb51190fb0b8b43764 \