Use new terraform latest version

Merge pull request #22 from clouddrove/cd-305

update github-action

Update module

Update License
Add tfsec.yml file in .ghuthub/workflows
Update terraform.yml
Update terraform latest version and Licence in Readme.yaml
Add version.tf in example

Fixed the subscription

• Fixed enable_subscription

Add new variable enable_subscription

New Features

• Add new variable enable_subscription

Upgrade module to terraform 0.15

New Features

• Upgrade module to terraform 0.15
• Upgrade pre-commit
• Added multi CIDR option

Upgrade module with Terraform 0.14

New Features

• Upgrade module with 0.14
• Update pre-hooks
• Add repository variable

Upgrage Terraform Version To 0.13

New Features

• Upgrade module with Terraform 0.13
• Update readme

Enable bool option and fix label

New Features

• Enabled bool option
• Fix labels

Add Github Action

New Features

• Add Github Action

Setup SNS using Terraform 0.12

Features

• Add terratest
• Proper Readme