Bump minimum Terraform to 0.12.9 (#617)

.github/workflows/lint.yml

@@ -56,7 +56,7 @@ jobs:
     name: Minimum version check
     runs-on: ubuntu-latest
     container:
-      image: hashicorp/terraform:0.12.6
+      image: hashicorp/terraform:0.12.9
     steps:
       - uses: actions/checkout@master
       - name: Validate Code

CHANGELOG.md

@@ -19,6 +19,7 @@ project adheres to [Semantic Versioning](http://semver.org/).
 - Fix deprecated interpolation-only expression (by @angelabad)
 - Fix broken terraform plan/apply on a cluster < 1.14 (by @hodduc)
 - Updated required version of AWS Provider to >= v2.38.0 for Managed Node Groups (by @wmorgan6796)
+- Updated minimum version of Terraform to avoid a bug (by @dpiddockcmp)
 
 #### Important notes
 

versions.tf

@@ -1,5 +1,5 @@
 terraform {
-  required_version = ">= 0.12.6"
+  required_version = ">= 0.12.9"
 
   required_providers {
     aws      = ">= 2.38.0"