[AUTOMATED] Update terraform-null-label versions to support Terraform 0.13 (#23)

* [AUTOMATED] Update terraform-null-label versions to support Terraform 0.13

* Updated README.md

* Bump modules in example

Co-authored-by: actions-bot <58130806+actions-bot@users.noreply.github.com>
Co-authored-by: aknysh <andriy.knysh@gmail.com>

Author: 3 people

examples/complete/main.tf

@@ -3,7 +3,7 @@ provider "aws" {
 }
 
 module "dynamodb_table" {
-  source      = "git::https://github.com/cloudposse/terraform-aws-dynamodb.git?ref=tags/0.16.0"
+  source      = "git::https://github.com/cloudposse/terraform-aws-dynamodb.git?ref=tags/0.17.1"
   namespace   = var.namespace
   environment = var.environment
   stage       = var.stage

main.tf

@@ -1,5 +1,5 @@
 module "default_label" {
-  source      = "git::https://github.com/cloudposse/terraform-null-label.git?ref=tags/0.16.0"
+  source      = "git::https://github.com/cloudposse/terraform-null-label.git?ref=tags/0.17.0"
   namespace   = var.namespace
   stage       = var.stage
   environment = var.environment