Improve Redis failure modes (#29405)

While investigating code paths during
Redis downtime, I found out that the library
by default retries indefinitely for read commmands.

This leads to it being stuck in a loop
while trying to read anything from Redis.
We fix that by disabling retry.

Secondly, we adjust the ConnWriteTimeout
value slightly from its default of 10s
which is a bit too high for normal working
conditions.

Ref: https://github.com/redis/rueidis/issues/680
```release-note
NONE
```

server/go.mod

@@ -56,7 +56,7 @@ require (
 	github.com/pkg/errors v0.9.1
 	github.com/prometheus/client_golang v1.19.1
 	github.com/prometheus/client_model v0.6.1
-	github.com/redis/rueidis v1.0.45
+	github.com/redis/rueidis v1.0.50
 	github.com/reflog/dateconstraints v0.2.1
 	github.com/rs/cors v1.11.0
 	github.com/rudderlabs/analytics-go v3.3.3+incompatible