chore(deps): update container image lscr.io/linuxserver/webtop to ubuntu-i3@8a4e7b3 (#15210)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| lscr.io/linuxserver/webtop | digest | `c3eb17c` -> `8a4e7b3` |

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charts/stable/webtop/values.yaml

@@ -52,7 +52,7 @@ alpineI3Image:
   pullPolicy: Always
 ubuntuI3Image:
   repository: lscr.io/linuxserver/webtop
-  tag: ubuntu-i3@sha256:c3eb17c55fe500f3c4d099da95ef6a0eb08b3795373f8a6728291656d0be5293
+  tag: ubuntu-i3@sha256:8a4e7b3058656668092598ebff462f9ba0f922b68367a5964d34da92afe755dc
   pullPolicy: Always
 fedoraI3Image:
   repository: lscr.io/linuxserver/webtop