chore(helm): update image docker.io/bitnamisecure/mariadb digest to a4e7a73 (#40762)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| docker.io/bitnamisecure/mariadb | digest | `998650b` -> `a4e7a73` |

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charts/stable/mariadb/Chart.yaml

@@ -43,5 +43,5 @@ sources:
   - https://hub.docker.com/r/bitnamisecure/mariadb
   - https://mariadb.org
 type: application
-version: 17.8.0
+version: 17.8.1
 

charts/stable/mariadb/values.yaml

@@ -1,7 +1,7 @@
 image:
   repository: docker.io/bitnamisecure/mariadb
   pullPolicy: IfNotPresent
-  tag: latest@sha256:998650bee1f1fb93cf8b72c11aa154617408c7e030dda1605fbaf2b286872ac7
+  tag: latest@sha256:a4e7a735755d7847a9bc639c2bfd0200dfdb60ea7a867b967fb5faee08187b31
 workload:
   main:
     podSpec: