chore(deps): update helm release nginx to v18.1.7 (#1039)

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

manifests/modules/introduction/helm/.workshop/terraform/vars.tf

@@ -38,5 +38,5 @@ variable "nginx_chart_version" {
   description = "The chart version of nginx to use"
   type        = string
   # renovate-helm: depName=nginx registryUrl=https://charts.bitnami.com/bitnami
-  default = "18.1.2"
+  default = "18.1.7"
 }