chore(deps): update dependency redis to v6.4.0

Author: nijel

requirements.txt

@@ -49,7 +49,7 @@ python3-saml==1.16.0
 qrcode==8.2
 rapidfuzz==3.14.5
 raven
-redis==5.3.1
+redis==6.4.0
 requests==2.33.1
 rollbar==1.3.0
 ruamel.yaml==0.19.1