fix wrong key names

hifiscp/Chart.yaml

 apiVersion: v1
 name: hifiscp
-version: 0.1.16
+version: 0.1.17
 description: A Helm chart to deploy the HIFIS Cloud Portal Backend and Frontend
 keywords:
   - HIFIS

hifiscp/templates/db_backup_cronjob.yaml

@@ -60,11 +60,11 @@ spec:
               valueFrom:
                 secretKeyRef:
                   name: {{ template "hifiscp.fullname" . }}-s3-credentials
-                  key: access-key
+                  key: access-key-id
             - name: AWS_SECRET_ACCESS_KEY
               valueFrom:
                 secretKeyRef:
                   name: {{ template "hifiscp.fullname" . }}-s3-credentials
-                  key: access-key
+                  key: secret-access-key
           restartPolicy: OnFailure
 {{ end }}
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