Update dependency quay.io/bitnami/mariadb to v10.7.3 - autoclosed

This MR contains the following updates:

Package	Type	Update	Change
quay.io/bitnami/mariadb	Kustomization	minor	10.6.7 -> 10.7.3

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k8s/apps/bookstack/base/mariadb/kustomization.yml

@@ -17,4 +17,4 @@ resources:
 images:
   - name: bitnami/mariadb
     newName: quay.io/bitnami/mariadb
-    newTag: 10.6.7
+    newTag: 10.7.3