chore(deps): update container image xwiki to 16.2.0-postgres-tomcat@975fd9c by renovate (#21412)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| xwiki | digest | `ec11188` -> `975fd9c` |

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This PR has been generated by [Renovate
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<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy4zMjUuMSIsInVwZGF0ZWRJblZlciI6IjM3LjMyNS4xIiwidGFyZ2V0QnJhbmNoIjoibWFzdGVyIiwibGFiZWxzIjpbImF1dG9tZXJnZSIsInVwZGF0ZS9kb2NrZXIvZ2VuZXJhbC9ub24tbWFqb3IiXX0=-->

charts/stable/xwiki/Chart.yaml

@@ -34,4 +34,4 @@ sources:
   - https://github.com/truecharts/charts/tree/master/charts/stable/xwiki
   - https://hub.docker.com/_/xwiki
 type: application
-version: 12.10.18
+version: 12.10.19

charts/stable/xwiki/values.yaml

@@ -1,6 +1,6 @@
 image:
   repository: xwiki
-  tag: 16.2.0-postgres-tomcat@sha256:ec11188e6e0a7c3fc6e94f1e1411e82e9ffb916349a16deccb11a641d69c154e
+  tag: 16.2.0-postgres-tomcat@sha256:975fd9cf27bb024a1a9a2bec9ec7126a251dfab1df4e93e38bb70521ac327e40
   pullPolicy: IfNotPresent
 service:
   main: