fix(deps): update container image lscr.io/linuxserver/rdesktop to ubuntu-xfce (#15139)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| lscr.io/linuxserver/rdesktop | digest | `1a6a58f` -> `3f9488e` |

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charts/stable/rdesktop/values.yaml

@@ -4,7 +4,7 @@ image:
   tag: latest@sha256:acbbca9333e6263a751d59ba91d855e87b1180e6b8c0049bb792c455029142be
 ubuntuXFCEImage:
   repository: lscr.io/linuxserver/rdesktop
-  tag: ubuntu-xfce@sha256:1a6a58fdfae5686dca622ebb807523ef0e14d069d0f27f628ca0f9a402a6e48d
+  tag: ubuntu-xfce@sha256:3f9488e8a50f3a3fda8ce38594c970fca17ae3b79462a81b905836b679055a2b
   pullPolicy: Always
 fedoraXFCEImage:
   repository: lscr.io/linuxserver/rdesktop