XWiki helm uses mysql, which uses removed bitnami repositories

Given the helm chart
https://github.com/xwiki-contrib/xwiki-helm/blob/master/charts/xwiki/Chart.yaml

mysql uses the `12.3.2` `bitnamicharts` 

Using `helm show all oci://registry-1.docker.io/bitnamicharts/mysql --version 12.3.2` the output shows

```helm show all oci://registry-1.docker.io/bitnamicharts/mysql --version 12.3.2.2
Pulled: registry-1.docker.io/bitnamicharts/mysql:12.3.2
Digest: sha256:ba0fd39f3d592c08e90f7c6fe86ea499df5810be3f296546f9eb27f6c51ba24b
annotations:
  category: Database
  images: |
    - name: mysql
      image: docker.io/bitnami/mysql:8.4.4-debian-12-r7
    - name: mysqld-exporter
      image: docker.io/bitnami/mysqld-exporter:0.17.2-debian-12-r2
    - name: os-shell
      image: docker.io/bitnami/os-shell:12-debian-12-r40
```

However, according to https://github.com/bitnami/containers/issues/83267 these are not valid anymore. This means we now get image pull errors when we want to replace our nodes, making it unable to start xwiki

Desired change:
Update xwiki helm such that existing images are used, and xwiki does not fail to start