chore(helm): update image ghcr.io/home-operations/plex digest to cb0310e (#33529)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [ghcr.io/home-operations/plex](https://ghcr.io/home-operations/plex) |
digest | `1c35e44` -> `cb0310e` |

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charts/stable/plex/Chart.yaml

@@ -33,4 +33,4 @@ sources:
   - https://github.com/k8s-at-home/container-images/pkgs/container/plex
   - https://github.com/truecharts/charts/tree/master/charts/stable/plex
 type: application
-version: 19.6.7
+version: 19.6.8

charts/stable/plex/values.yaml

@@ -1,7 +1,7 @@
 image:
   repository: ghcr.io/home-operations/plex
   pullPolicy: IfNotPresent
-  tag: 1.41.5.9522@sha256:1c35e44828531320f4fccd980da5a3d0da08a438f1c89841d8be97cfefe66e63
+  tag: 1.41.5.9522@sha256:cb0310eb53e8ff6e51be2869b6de0425f649e631aa329e6ccf0c72ba580a8aa3
 service:
   main:
     ports: