chore(xwiki): update image public.ecr.aws/docker/library/xwiki digest to 2235518 (#48710)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [public.ecr.aws/docker/library/xwiki](https://hub.docker.com/_/xwiki)
([source](https://redirect.github.com/xwiki-contrib/docker-xwiki)) |
digest | `f79f25e` → `2235518` |

---

> [!WARNING]
> Some dependencies could not be looked up. Check the [Dependency
Dashboard](../issues/18710) for more information.

Add the preset `:preserveSemverRanges` to your config if you don't want
to pin your dependencies.

---

### Configuration

📅 **Schedule**: (UTC)

- Branch creation
  - At any time (no schedule defined)
- Automerge
  - At any time (no schedule defined)

🚦 **Automerge**: Enabled.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

This PR has been generated by [Renovate
Bot](https://redirect.github.com/renovatebot/renovate).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0My4xMzAuMSIsInVwZGF0ZWRJblZlciI6IjQzLjEzMC4xIiwidGFyZ2V0QnJhbmNoIjoibWFzdGVyIiwibGFiZWxzIjpbImFwcC94d2lraSIsImF1dG9tZXJnZSIsInJlbm92YXRlL2NvbnRhaW5lciIsInR5cGUvZGlnZXN0Il19-->

charts/stable/xwiki/Chart.yaml

@@ -36,5 +36,5 @@ sources:
   - https://github.com/trueforge-org/truecharts/tree/master/charts/stable/xwiki
   - https://github.com/xwiki/xwiki-docker
 type: application
-version: 18.6.0
+version: 18.6.1
 

charts/stable/xwiki/values.yaml

@@ -1,7 +1,7 @@
 # yaml-language-server: $schema=./values.schema.json
 image:
   repository: public.ecr.aws/docker/library/xwiki
-  tag: 18.4.0-postgres-tomcat@sha256:f79f25ea735cd7d29b215f36ff82a94e35f21ef33374155484b704ac9451b8cb
+  tag: 18.4.0-postgres-tomcat@sha256:22355182dc1c5d35853c2d98228e2e353ee87ba1b82458f6ba82a2ef3fcadaa2
   pullPolicy: IfNotPresent
 service:
   main: