fix(core): add redis ping interval

[simeng-li]

Summary

1. Add a Redis ping interval to prevent idle connections from being disconnected by Azure. For more details, refer to the Azure documentation on idle timeout.
2. Add trySafe wrapper to the WellKnown cache getter method. Incase of any Redis connection failure, it should not affect the Logto core functionality.

Testing

Checklist

• .changeset
• unit tests
• integration tests
• necessary TSDoc comments

[github-actions]

COMPARE TO master

Total Size Diff 📈 +263 Bytes

Diff by File

Name	Diff
packages/core/src/caches/index.ts	📈 +213 Bytes
packages/core/src/caches/well-known.ts	📈 +50 Bytes