chore(deps): update container image xwiki to 16.4.0-postgres-tomcat@cb9899a by renovate (#22903)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| xwiki | digest | `aef6e12` -> `cb9899a` |

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This PR has been generated by [Renovate
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<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy4zOTIuMCIsInVwZGF0ZWRJblZlciI6IjM3LjM5Mi4wIiwidGFyZ2V0QnJhbmNoIjoibWFzdGVyIiwibGFiZWxzIjpbImF1dG9tZXJnZSIsInVwZGF0ZS9kb2NrZXIvZ2VuZXJhbC9ub24tbWFqb3IiXX0=-->

charts/stable/xwiki/Chart.yaml

@@ -34,4 +34,4 @@ sources:
   - https://github.com/xwiki/xwiki-docker
   - https://hub.docker.com/_/xwiki
 type: application
-version: 14.0.1
+version: 14.0.2

charts/stable/xwiki/values.yaml

@@ -1,6 +1,6 @@
 image:
   repository: xwiki
-  tag: 16.4.0-postgres-tomcat@sha256:aef6e12ff06f498de99c6041d4f1c38dedc8d736bd6d9c4230a5ce9cc31e9199
+  tag: 16.4.0-postgres-tomcat@sha256:cb9899aa87cbce5a940f45e57a0c61a716f184ca52e73f85e8607965a4001cc7
   pullPolicy: IfNotPresent
 service:
   main: