Disable helm experiments by default, block Kubernetes provider 2.21.0 (cloudposse/terraform-aws-components#712)

Author: Nuru

src/README.md

@@ -92,14 +92,14 @@ components:
 | <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.0.0 |
 | <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 4.0 |
 | <a name="requirement_helm"></a> [helm](#requirement\_helm) | >= 2.0 |
-| <a name="requirement_kubernetes"></a> [kubernetes](#requirement\_kubernetes) | >= 2.7.1, != 2.21.0 |
+| <a name="requirement_kubernetes"></a> [kubernetes](#requirement\_kubernetes) | >= 2.7.1, != 2.21.0, != 2.21.0 |
 
 ## Providers
 
 | Name | Version |
 |------|---------|
 | <a name="provider_aws"></a> [aws](#provider\_aws) | >= 4.0 |
-| <a name="provider_kubernetes"></a> [kubernetes](#provider\_kubernetes) | >= 2.7.1, != 2.21.0 |
+| <a name="provider_kubernetes"></a> [kubernetes](#provider\_kubernetes) | >= 2.7.1, != 2.21.0, != 2.21.0 |
 
 ## Modules
 

src/versions.tf

@@ -12,7 +12,7 @@ terraform {
     }
     kubernetes = {
       source  = "hashicorp/kubernetes"
-      version = ">= 2.7.1, != 2.21.0"
+      version = ">= 2.7.1, != 2.21.0, != 2.21.0"
     }
   }
 }