chore(deps): update wordpress docker tag to v6.9.1

Author: dslab-renovate[bot]

wordpress/values.yaml

@@ -140,7 +140,7 @@ php:
     repository: wordpress
     pullPolicy: IfNotPresent
     # Overrides the image tag whose default is the chart appVersion.
-    tag: "6.8.3-php8.3-fpm-alpine"
+    tag: "6.9.1-php8.3-fpm-alpine@sha256:2e7ef07fc2d0f8fd14debae8c4d4811f2ab1bb5d07aee3cfa2e8242feed7710f"
   imagePullSecrets: []
   serviceAccount:
     create: true