fix(deps)!: Update Terraform terraform-google-modules/cloud-dns/google to v6 (#613)

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

Author: renovate[bot]

modules/private-service-connect/dns.tf

@@ -20,7 +20,7 @@
 
 module "googleapis" {
   source      = "terraform-google-modules/cloud-dns/google"
-  version     = "~> 5.0"
+  version     = "~> 6.0"
   project_id  = var.project_id
   type        = "private"
   name        = "${local.dns_code}apis"
@@ -53,7 +53,7 @@ module "googleapis" {
 
 module "gcr" {
   source      = "terraform-google-modules/cloud-dns/google"
-  version     = "~> 5.0"
+  version     = "~> 6.0"
   project_id  = var.project_id
   type        = "private"
   name        = "${local.dns_code}gcr"
@@ -86,7 +86,7 @@ module "gcr" {
 
 module "pkg_dev" {
   source      = "terraform-google-modules/cloud-dns/google"
-  version     = "~> 5.0"
+  version     = "~> 6.0"
   project_id  = var.project_id
   type        = "private"
   name        = "${local.dns_code}pkg-dev"