Update nginx/nginx-prometheus-exporter Docker tag from 1.4.2 to v1.5.1 (helm/defectdojo/values.yaml)

Author: renovate[bot]

helm/defectdojo/values.yaml

@@ -192,7 +192,7 @@ monitoring:
     image:
       registry: ""
       repository: nginx/nginx-prometheus-exporter
-      tag: "1.4.2"
+      tag: "1.5.1"
       digest: ""
     imagePullPolicy: IfNotPresent
     # -- Optional: container security context for nginx prometheus exporter