chore: improve redis logging

[rarkins]

Changes

Add additional logging for Redis cache, elevate debug to warn in case of a failed cache set.

Context

Documentation (please check one with an [x])

• [ ] I have updated the documentation, or
• [x] No documentation update is required

How I've tested my work (please select one)

I have verified these changes via:

• [x] Code inspection only, or
• [ ] Newly added/modified unit tests, or
• [ ] No unit tests but ran on a real repository, or
• [ ] Both unit tests + ran on a real repository

[renovate-release]

:tada: This PR is included in version 37.421.0 :tada:

The release is available on:

• GitHub release
• npm package (@latest dist-tag)
• 37.421.0

Your semantic-release bot :package::rocket: