chore(helm): update image docker.io/accetto/ubuntu-vnc-xfce-firefox-g3 digest to 6ebd18f (#34050)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| docker.io/accetto/ubuntu-vnc-xfce-firefox-g3 | digest | `cc4626a` ->
`6ebd18f` |

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

@@ -38,4 +38,5 @@ sources:
   - https://github.com/truecharts/charts/tree/master/charts/stable/firefox-desktop-g3
   - https://hub.docker.com/r/accetto/ubuntu-vnc-xfce-firefox-g3
 type: application
-version: 7.5.6
+version: 7.5.7
+

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

@@ -1,7 +1,7 @@
 image:
   pullPolicy: IfNotPresent
   repository: docker.io/accetto/ubuntu-vnc-xfce-firefox-g3
-  tag: latest@sha256:cc4626a87d1240776c0e7f5d3c977e52eae1eebbfc55827d0dba8abe2652e079
+  tag: latest@sha256:6ebd18ff8640f0813f3e729ed9015e30b1301b0ab7928dba8c1fbe25b7e9ccc4
 persistence:
   internalshare:
     enabled: true