docs: stop skipping the account ID lookup in Terraform provider blocks (#1101)

docs/terraform-workbooks/eks-https-ingress/main.tf

@@ -115,10 +115,8 @@ provider "aws" {
     acm = var.spinifex_endpoint
   }
 
-  skip_credentials_validation = true
-  skip_metadata_api_check     = true
-  skip_requesting_account_id  = true
-  skip_region_validation      = true
+  skip_metadata_api_check = true
+  skip_region_validation  = true
 }
 
 data "aws_availability_zones" "available" {

docs/terraform-workbooks/eks-https-ingress/workloads/main.tf

@@ -63,10 +63,8 @@ provider "aws" {
     eks = var.spinifex_endpoint
   }
 
-  skip_credentials_validation = true
-  skip_metadata_api_check     = true
-  skip_requesting_account_id  = true
-  skip_region_validation      = true
+  skip_metadata_api_check = true
+  skip_region_validation  = true
 }
 
 # Cluster identity comes from the parent module's state; the live endpoint/CA