chore(deps): update helm release mariadb to v12

This MR contains the following updates:

Package	Type	Update	Change
mariadb (source)	HelmChart	major	11.5.7 -> 12.1.6

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k8s-235/apps/photoprism/base/kustomization.yaml

@@ -13,7 +13,7 @@ helmCharts:
 - name: mariadb
   includeCRDs: true
   releaseName: photoprism
-  version: 11.5.7
+  version: 12.1.6
   repo: https://charts.bitnami.com/bitnami
   namespace: photoprism
   valuesInline: