Amanda, Please let us know which version of Redis you used to fix the Redis and Sentinel issues for TLS. Redis officially supports TLS from their 6.0 version onwards. Text from redis.io : "SSL/TLS is supported by Redis starting with version 6 as an optional feature that needs to be enabled at compile time." Are you using the latest Redis version 7.0 or 6.2.2?

I used 6.2.7 and compiled at run-time to enable SSL for my testing (which is latest on the 6.2 stream). But the changes here are compatible with non-SSL and SSL redis versions, so work fine with the versions that the bash installer uses (though in those cases the package manager will pull down non-SSL version of redis), therefore if using the package manager redis you won't have SSL support.
I have no reason to believe this won't work with redis 7, but I have not verified that.
This Pr is to resolve problems found with users that install redis separately with TLS enabled.

Amanda, Thanks for the update, I was wondering if the ssl fix that you have put in also has the fix for providing an username password for Redis. Please let us know.

As far as I know there is no issue with username/password with non-ssl redis. I've used StackStorm connected to redis secured by username/password before quite happily, on many StackStorm versions including 3.7.0