Radarr api-v3 changes

[clinton-hall]

Description

Update to Radarr v3 api.

Fixes #1831

Type of change

• [X] Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

User verified

Test Configuration:

Checklist:

• [X] I have based this change on the nightly branch
• [X] I have performed a self-review of my own code
• [X] New and existing unit tests pass locally with my changes