chore(deps): update container image accetto/ubuntu-vnc-xfce-firefox-g3 to latest@50bf446 (#16145)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| accetto/ubuntu-vnc-xfce-firefox-g3 | digest | `7732f3c` -> `50bf446` |

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charts/stable/firefox-desktop-g3/Chart.yaml

@@ -1,7 +1,7 @@
 kubeVersion: '>=1.24.0-0'
 apiVersion: v2
 name: firefox-desktop-g3
-version: 3.0.4
+version: 3.0.5
 appVersion: latest
 description: Headless Ubuntu/Xfce Charts with VNC/noVNC for diagramming, image editing
   and 2D/3D drawing

charts/stable/firefox-desktop-g3/values.yaml

@@ -1,7 +1,7 @@
 image:
   pullPolicy: IfNotPresent
   repository: accetto/ubuntu-vnc-xfce-firefox-g3
-  tag: latest@sha256:7732f3c3e0496aa60fe01b086d112d7c510e9546b5f5832fc77f3bc20e674796
+  tag: latest@sha256:50bf4468b83dc633f9d66987663b1b079f4c50e5bd682004601703efa6be670a
 persistence:
   internalshare:
     enabled: true