chore(deps): update container image tccr.io/truecharts/plex to v1.31.3.6868 (#8511)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [tccr.io/truecharts/plex](https://togithub.com/truecharts/containers)
| patch | `1.31.1.6733` -> `1.31.3.6868` |

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charts/stable/plex/Chart.yaml

@@ -1,5 +1,5 @@
 apiVersion: v2
-appVersion: "1.31.1.673"
+appVersion: "1.31.3.686"
 dependencies:
   - name: common
     repository: https://library-charts.truecharts.org
@@ -21,7 +21,7 @@ sources:
   - https://github.com/truecharts/charts/tree/master/charts/stable/plex
   - https://github.com/k8s-at-home/container-images/pkgs/container/plex
 type: application
-version: 13.0.11
+version: 13.0.12
 annotations:
   truecharts.org/catagories: |
     - media

charts/stable/plex/values.yaml

@@ -1,7 +1,7 @@
 image:
   repository: tccr.io/truecharts/plex
   pullPolicy: IfNotPresent
-  tag: 1.31.1.6733@sha256:69fb6bd4cc0a414ba553f8dc13f748906ae67cfc17d921bb4d7aaa7aea588bcd
+  tag: 1.31.3.6868@sha256:15a438c7e741a3158a04be54916dbb56be7bbe78129519b2fd91b285567029e3
 service:
   main:
     ports: