fix(deps): update container image lscr.io/linuxserver/rdesktop to fedora-mate (#15130)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| lscr.io/linuxserver/rdesktop | digest | `252791f` -> `773f014` |

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charts/stable/rdesktop/values.yaml

@@ -40,7 +40,7 @@ ubuntuMATEImage:
   pullPolicy: Always
 fedoraMATEImage:
   repository: lscr.io/linuxserver/rdesktop
-  tag: fedora-mate@sha256:252791ffff04a05e5532f0e6edc96b23e44aadc019d335d03b5fcadd38391a72
+  tag: fedora-mate@sha256:773f01474b9cd088ba9804c66b0ad599c3a4759dda09e9afdd2ae82f05909971
   pullPolicy: Always
 archMATEImage:
   repository: lscr.io/linuxserver/rdesktop