[bitnami/postgresql] Fix postgres password if customUser is empty (#17473)

Signed-off-by: Gonzalo Gomez Gracia <gonzalog@vmware.com>

bitnami/postgresql/Chart.yaml

@@ -28,4 +28,4 @@ maintainers:
 name: postgresql
 sources:
   - https://github.com/bitnami/charts/tree/main/bitnami/postgresql
-version: 12.6.1
+version: 12.6.2

bitnami/postgresql/templates/primary/statefulset.yaml

@@ -222,8 +222,11 @@ spec:
             {{- if .Values.auth.usePasswordFiles }}
             - name: POSTGRES_POSTGRES_PASSWORD_FILE
               value: {{ printf "/opt/bitnami/postgresql/secrets/%s" (include "postgresql.adminPasswordKey" .) }}
+            {{- else if .Values.auth.postgresPassword }}
+            - name: POSTGRES_PASSWORD
+              value: {{ .Values.auth.postgresPassword }}
             {{- else }}
-            - name: POSTGRES_POSTGRES_PASSWORD
+            - name: POSTGRES_PASSWORD
               valueFrom:
                 secretKeyRef:
                   name: {{ include "postgresql.secretName" . }}