chore(mariadb): update image docker.io/bitnamisecure/mariadb digest to 7156c5d (#47587)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| docker.io/bitnamisecure/mariadb | digest | `a6aa715` → `7156c5d` |

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charts/stable/mariadb/Chart.yaml

@@ -40,5 +40,5 @@ sources:
   - https://hub.docker.com/r/bitnamisecure/mariadb
   - https://mariadb.org
 type: application
-version: 18.1.2
+version: 18.1.3
 

charts/stable/mariadb/values.yaml

@@ -2,7 +2,7 @@
 image:
   repository: docker.io/bitnamisecure/mariadb
   pullPolicy: IfNotPresent
-  tag: latest@sha256:a6aa7154f5e7c08f2515989e5810426dac9da633fb24785d525d75bdbd9cb23f
+  tag: latest@sha256:7156c5d6865f5bcebeac4c7055898c916c445b9cba008a70ed7d608156f89d1f
 workload:
   main:
     podSpec: