fix: Do not require uri if redisClient object provided.

[palmtown]

Summary

• [ ] Tell us about the problem your pull request is solving.

If passing a redisClient object as shown in Exhibit 1, current code will throw an error as it is expecting the uri. However, when passing the redisClient the uri is not required.

Exhibit 1 app.configure( sync({ redisClient }) );

• [ ] Are there any open issues that are related to this?

https://github.com/feathersjs-ecosystem/feathers-sync/issues/197

• [ ] Is this PR dependent on PRs in other repos?

No

If so, please mention them to keep the conversations linked together.

Other Information