make this module v14 compatible (#27)

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

Author: jurgenweber

README.md

@@ -1,4 +1,6 @@
+<!-- markdownlint-disable -->
 # terraform-aws-dynamodb-autoscaler [![Latest Release](https://img.shields.io/github/release/cloudposse/terraform-aws-dynamodb-autoscaler.svg)](https://github.com/cloudposse/terraform-aws-dynamodb-autoscaler/releases/latest) [![Slack Community](https://slack.cloudposse.com/badge.svg)](https://slack.cloudposse.com)
+<!-- markdownlint-restore -->
 
 [![README Header][readme_header_img]][readme_header_link]
 
@@ -299,8 +301,10 @@ Check out [our other projects][github], [follow us on twitter][twitter], [apply
 
 ### Contributors
 
+<!-- markdownlint-disable -->
 |  [![Erik Osterman][osterman_avatar]][osterman_homepage]<br/>[Erik Osterman][osterman_homepage] | [![Andriy Knysh][aknysh_avatar]][aknysh_homepage]<br/>[Andriy Knysh][aknysh_homepage] | [![Michele Cantelli][emmekappa_avatar]][emmekappa_homepage]<br/>[Michele Cantelli][emmekappa_homepage] |
 |---|---|---|
+<!-- markdownlint-restore -->
 
   [osterman_homepage]: https://github.com/osterman
   [osterman_avatar]: https://img.cloudposse.com/150x150/https://github.com/osterman.png

main.tf

@@ -1,5 +1,5 @@
 module "default_label" {
-  source      = "git::https://github.com/cloudposse/terraform-null-label.git?ref=tags/0.17.0"
+  source      = "git::https://github.com/cloudposse/terraform-null-label.git?ref=tags/0.22.0"
   namespace   = var.namespace
   stage       = var.stage
   environment = var.environment