update CHANGELOG.md for #9251

CHANGELOG.md

@@ -20,6 +20,7 @@ IMPROVEMENTS:
 * dependencies: upgrading to `v0.13.0` of `github.com/hashicorp/go-azure-helpers` [GH-9191]
 * dependencies: upgrading to `v0.14.0` of `github.com/tombuildsstuff/giovanni` [GH-9189]
 * storage: upgrading the Data Plane API's to API Version `2019-12-12` [GH-9192]
+* `app_service` support `v5.0` for the `dotnet_framework_version` [GH-9251]
 * `azurerm_linux_virtual_machine` - support for managed boot diagnostics by leaving the `storage_account_uri` property empty [GH-8917]
 * `azurerm_linux_virtual_machine_scale_set` - support for managed boot diagnostics by leaving the `storage_account_uri` property empty [GH-8917]
 * `azurerm_policy_remediation` - support for the `resource_discovery_mode` property [GH-9210]