chore(helm): update image docker.io/linuxserver/transmission digest to 5a8121c (#33133)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
|
[docker.io/linuxserver/transmission](https://redirect.github.com/linuxserver/docker-transmission/packages)
([source](https://redirect.github.com/linuxserver/docker-transmission))
| digest | `edf0559` -> `5a8121c` |

Add the preset `:preserveSemverRanges` to your config if you don't want
to pin your dependencies.

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined),
Automerge - At any time (no schedule defined).

🚦 **Automerge**: Enabled.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

This PR has been generated by [Renovate
Bot](https://redirect.github.com/renovatebot/renovate).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzOS4xOTEuNCIsInVwZGF0ZWRJblZlciI6IjM5LjE5MS40IiwidGFyZ2V0QnJhbmNoIjoibWFzdGVyIiwibGFiZWxzIjpbImF1dG9tZXJnZSIsInJlbm92YXRlL2NvbnRhaW5lciIsInR5cGUvZGlnZXN0Il19-->

charts/stable/transmission/Chart.yaml

@@ -35,4 +35,4 @@ sources:
   - https://github.com/truecharts/charts/tree/master/charts/stable/transmission
   - https://hub.docker.com/r/linuxserver/transmission
 type: application
-version: 23.0.5
+version: 23.0.6

charts/stable/transmission/values.yaml

@@ -1,7 +1,7 @@
 image:
   repository: docker.io/linuxserver/transmission
   pullPolicy: IfNotPresent
-  tag: 4.0.6@sha256:edf05593c24381825ebab739b9a04c1ae27ac9e3b434444b53b9bf43f2e78d62
+  tag: 4.0.6@sha256:5a8121cb78e062bdcfb17b592ecd5b2f33e5ff10afe098b64b71dff0f83da668
 service:
   main:
     ports: