[stable/drupal] Change regex looking for rolling tags (#14251)

Signed-off-by: Carlos Rodriguez Hernandez <crhernandez@bitnami.com>

stable/drupal/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v1
 name: drupal
-version: 3.2.7
+version: 3.2.8
 appVersion: 8.7.2
 description: One of the most versatile open source content management systems.
 keywords:

stable/drupal/templates/NOTES.txt

@@ -43,7 +43,7 @@
   echo Username: {{ .Values.drupalUsername }}
   echo Password: $(kubectl get secret --namespace {{ .Release.Namespace }} {{ template "drupal.fullname" . }} -o jsonpath="{.data.drupal-password}" | base64 --decode)
 
-{{- if and (contains "bitnami/" .Values.image.repository) (not (.Values.image.tag | regexFind "-r\\d+$")) }}
+{{- if and (contains "bitnami/" .Values.image.repository) (not (.Values.image.tag | toString | regexFind "-r\\d+$|sha256:")) }}
 
 WARNING: Rolling tag detected ({{ .Values.image.repository }}:{{ .Values.image.tag }}), please note that it is strongly recommended to avoid using rolling tags in a production environment.
 +info https://docs.bitnami.com/containers/how-to/understand-rolling-tags-containers/