[AUTOMATED] Update Version Pinning for Terraform to support 0.13 (#31)

1. Update Version Pinning for Terraform to support 0.13

1. This is a relatively minor update that the CloudPosse module already likely supports.
1. This allows module consumers to not individually update our Terraform module to support Terraform 0.13.

Author: Gowiem

README.md

@@ -81,7 +81,7 @@ Available targets:
 
 | Name | Version |
 |------|---------|
-| terraform | >= 0.12 |
+| terraform | >= 0.12.0, < 0.14.0 |
 | aws | ~> 2.55 |
 | null | ~> 2.1 |
 | template | ~> 2.1 |

docs/terraform.md

@@ -2,7 +2,7 @@
 
 | Name | Version |
 |------|---------|
-| terraform | >= 0.12 |
+| terraform | >= 0.12.0, < 0.14.0 |
 | aws | ~> 2.55 |
 | null | ~> 2.1 |
 | template | ~> 2.1 |

versions.tf

@@ -1,6 +1,6 @@
 
 terraform {
-  required_version = ">= 0.12"
+  required_version = ">= 0.12.0, < 0.14.0"
 
   required_providers {
     aws      = "~> 2.55"