Update ghcr.io/linuxserver/sonarr digest to 7489b8b

This MR contains the following updates:

Package	Type	Update	Change
ghcr.io/linuxserver/sonarr	Kustomization	digest	05c3ffb -> 7489b8b

---

Configuration

Schedule: At any time (no schedule defined).

Automerge: Disabled by config. Please merge this manually once you are satisfied.

Rebasing: Whenever MR becomes conflicted, or you tick the rebase/retry checkbox.

Ignore: Close this MR and you won't be reminded about this update again.

---

• If you want to rebase/retry this MR, click this checkbox.

---

This MR has been generated by Renovate Bot.