fix(container): update image app-template to v1.5.1 (#767)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

kubernetes/apps/default/echo-server/app/helmrelease.yaml

@@ -9,7 +9,7 @@ spec:
   chart:
     spec:
       chart: app-template
-      version: 1.5.0
+      version: 1.5.1
       sourceRef:
         kind: HelmRepository
         name: bjw-s

kubernetes/apps/networking/cloudflared/app/helmrelease.yaml

@@ -9,7 +9,7 @@ spec:
   chart:
     spec:
       chart: app-template
-      version: 1.5.0
+      version: 1.5.1
       sourceRef:
         kind: HelmRepository
         name: bjw-s