Fix subscription setup.

Author: alistairjevans

subscription.json

@@ -353,7 +353,7 @@
       "apiVersion": "2022-04-01",
       "name": "[guid(subscription().subscriptionId, variables('nestedDeploymentName'), variables('readerRoleId'))]",
       "dependsOn": [
-        "[resourceId('Microsoft.Resources/deployments', variables('nestedDeploymentName'))]"
+        "[variables('nestedDeploymentName')]"
       ],
       "properties": {
         "roleDefinitionId": "[subscriptionResourceId('Microsoft.Authorization/roleDefinitions', variables('readerRoleId'))]",
@@ -366,7 +366,7 @@
       "apiVersion": "2021-05-01-preview",
       "name": "[concat('betterstack-activity-logs-', parameters('betterStackSourceId'), '-', parameters('location'))]",
       "dependsOn": [
-        "[resourceId('Microsoft.Resources/deployments', variables('nestedDeploymentName'))]"
+        "[variables('nestedDeploymentName')]"
       ],
       "properties": {
         "eventHubAuthorizationRuleId": "[reference(variables('nestedDeploymentName')).outputs.sendRuleId.value]",