chore(deps): update container image lscr.io/linuxserver/webtop to ubuntu-mate@a85f259 (#15213)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| lscr.io/linuxserver/webtop | digest | `01f35a3` -> `a85f259` |

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charts/stable/webtop/values.yaml

@@ -36,7 +36,7 @@ alpineMATEImage:
   pullPolicy: Always
 ubuntuMATEImage:
   repository: lscr.io/linuxserver/webtop
-  tag: ubuntu-mate@sha256:01f35a352d46c49979dbd92cc50ff4cc2f447483d8c2c688f97bc5bb245b0a2f
+  tag: ubuntu-mate@sha256:a85f25958dbbd15b6bb9309c19dec3c32c0a07e8d8b4c50e5c2df96bc4bdcd4d
   pullPolicy: Always
 fedoraMATEImage:
   repository: lscr.io/linuxserver/webtop