ssl cert not working for rancher-backup with minio-backup
while working on https://gitlab.com/sylva-projects/sylva-core/-/merge_requests/7362, in the pipeline runs it's seen that ssl certificate seems not valid for minio-backup in rancher-backup unit
- https://gitlab.com/sylva-projects/sylva-core/-/jobs/13891006563
- https://gitlab.com/sylva-projects/sylva-core/-/jobs/13893483371
```
2026/04/13 09:26:44.461819 Unit timeout exceeded: unit Kustomization/rancher-backup-restore-operator-init did not become ready after 5m0s
Details on Kustomization/rancher-backup-restore-operator-init and related resources:
IDENTIFIER STATUS REASON MESSAGE
Kustomization/sylva-system/rancher-backup-restore-operator-init InProgress Kustomization generation is 2, but latest observed generation is 1
╰┄╴Backup/recurring-backup InProgress Backup generation is 1, but latest observed generation is 0
╰┄╴┬┄┄[Conditions]
├┄╴Reconciling False Error failed to check if s3 bucket [backup] exists, error: Get "https://minio-backup.sylva/backup/?location=": tls: failed to verify certificate: x509: certificate signed by unknown authority
╰┄╴Ready Unknown Retrying
```
cc @stoub @mihai.zaharia
issue