doc: Update SAST-IaC docs with ARM support

Updates docs to clarify support for ARMs
in JSON format

doc/user/application_security/iac_scanning/index.md

@@ -36,12 +36,15 @@ GitLab IaC scanning supports a variety of IaC configuration files. Our IaC secur
 |------------------------------------------|----------------------------------|-------------------------------|
 | Ansible                                  | [KICS](https://kics.io/)         | 14.5                          |
 | AWS CloudFormation                       | [KICS](https://kics.io/)         | 14.5                          |
+| Azure Resource Manager <sup>1</sup>      | [KICS](https://kics.io/)         | 14.5                          |
 | Dockerfile                               | [KICS](https://kics.io/)         | 14.5                          |
 | Google Deployment Manager                | [KICS](https://kics.io/)         | 14.5                          |
 | Kubernetes                               | [KICS](https://kics.io/)         | 14.5                          |
 | OpenAPI                                  | [KICS](https://kics.io/)         | 14.5                          |
 | Terraform                                | [KICS](https://kics.io/)         | 14.5                          |
 
+1. IaC scanning can analyze Azure Resource Manager templates in JSON format. If you write templates in the [Bicep](https://docs.microsoft.com/en-us/azure/azure-resource-manager/bicep/overview) language, you must use [the bicep CLI](https://docs.microsoft.com/en-us/azure/azure-resource-manager/bicep/bicep-cli) to convert your Bicep files into JSON before GitLab IaC scanning can analyze them.
+
 ### Making IaC analyzers available to all GitLab tiers
 
 All open source (OSS) analyzers are available with the GitLab Free tier. Future proprietary analyzers may be restricted to higher tiers.