chore(helm): update image docker.io/bitnami/wordpress digest to 64172d5 (#29079)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
|
[docker.io/bitnami/wordpress](https://redirect.github.com/bitnami/containers)
([source](https://redirect.github.com/bitnami/containers/tree/HEAD/bitnami/wordpress))
| digest | `e268136` -> `64172d5` |

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charts/stable/wordpress/Chart.yaml

@@ -40,4 +40,4 @@ sources:
   - https://hub.docker.com/r/bitnami/wordpress
   - https://www.wordpress.org
 type: application
-version: 9.7.14
+version: 9.7.15

charts/stable/wordpress/values.yaml

@@ -1,7 +1,7 @@
 image:
   repository: docker.io/bitnami/wordpress
   pullPolicy: IfNotPresent
-  tag: 6.6.2@sha256:e268136695b1caca8f03da55c645967d26a4793775bfd7fa524ec95089f06828
+  tag: 6.6.2@sha256:64172d5400f61d9de2c7e426821a55163db01b6d153d836e2b522f3c07ddfff8
 securityContext:
   container:
     readOnlyRootFilesystem: false