make this module v14 compatible (#29)

Co-authored-by: actions-bot <[email protected]>

README.md

@@ -1,6 +1,8 @@
+<!-- markdownlint-disable -->
 # terraform-aws-route53-cluster-hostname
 
  [![Latest Release](https://img.shields.io/github/release/cloudposse/terraform-aws-route53-cluster-hostname.svg)](https://github.com/cloudposse/terraform-aws-route53-cluster-hostname/releases/latest) [![Slack Community](https://slack.cloudposse.com/badge.svg)](https://slack.cloudposse.com)
+<!-- markdownlint-restore -->
 
 [![README Header][readme_header_img]][readme_header_link]
 
@@ -272,8 +274,10 @@ 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] | [![Igor Rodionov][goruha_avatar]][goruha_homepage]<br/>[Igor Rodionov][goruha_homepage] | [![Andriy Knysh][aknysh_avatar]][aknysh_homepage]<br/>[Andriy Knysh][aknysh_homepage] | [![Lucas Pearson][pearson-lucas-dev_avatar]][pearson-lucas-dev_homepage]<br/>[Lucas Pearson][pearson-lucas-dev_homepage] | [![Daren Desjardins][darend_avatar]][darend_homepage]<br/>[Daren Desjardins][darend_homepage] |
 |---|---|---|---|---|
+<!-- markdownlint-restore -->
 
   [osterman_homepage]: https://github.com/osterman
   [osterman_avatar]: https://img.cloudposse.com/150x150/https://github.com/osterman.png

context.tf

@@ -19,7 +19,7 @@
 #
 
 module "this" {
-  source = "git::https://github.com/cloudposse/terraform-null-label.git?ref=tags/0.19.2"
+  source = "git::https://github.com/cloudposse/terraform-null-label.git?ref=tags/0.22.0"
 
   enabled             = var.enabled
   namespace           = var.namespace