feat(container): update image app-template to v3.1.0 (#1405)

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

bootstrap/templates/kubernetes/apps/network/cloudflared/app/helmrelease.yaml.j2

@@ -8,7 +8,7 @@ spec:
   chart:
     spec:
       chart: app-template
-      version: 3.0.4
+      version: 3.1.0
       sourceRef:
         kind: HelmRepository
         name: bjw-s

bootstrap/templates/kubernetes/apps/network/echo-server/app/helmrelease.yaml.j2

@@ -8,7 +8,7 @@ spec:
   chart:
     spec:
       chart: app-template
-      version: 3.0.4
+      version: 3.1.0
       sourceRef:
         kind: HelmRepository
         name: bjw-s

bootstrap/templates/kubernetes/apps/system-upgrade/system-upgrade-controller/app/helmrelease.yaml.j2

@@ -8,7 +8,7 @@ spec:
   chart:
     spec:
       chart: app-template
-      version: 3.0.4
+      version: 3.1.0
       sourceRef:
         kind: HelmRepository
         name: bjw-s