Add readonly ID of synthetics test steps (#2747)

Co-authored-by: ci.datadog-api-spec <packages@datadoghq.com>

Author: api-clients-generation-pipeline[bot]

.generator/schemas/v1/openapi.yaml

@@ -14413,6 +14413,11 @@ components:
         extractedValuesFromScript:
           description: Generate variables using JavaScript.
           type: string
+        id:
+          description: ID of the step.
+          example: abc-def-123
+          readOnly: true
+          type: string
         isCritical:
           description: 'Determines whether or not to consider the entire test as failed
             if this step fails.
@@ -14469,6 +14474,11 @@ components:
     SyntheticsAPIWaitStep:
       description: The Wait step used in a Synthetic multi-step API test.
       properties:
+        id:
+          description: ID of the step.
+          example: abc-def-123
+          readOnly: true
+          type: string
         name:
           description: The name of the step.
           example: Example step name

services/synthetics/src/v1/models/SyntheticsAPITestStep.ts

@@ -30,6 +30,10 @@ export class SyntheticsAPITestStep {
    * Generate variables using JavaScript.
    */
   "extractedValuesFromScript"?: string;
+  /**
+   * ID of the step.
+   */
+  "id"?: string;
   /**
    * Determines whether or not to consider the entire test as failed if this step fails.
    * Can be used only if `allowFailure` is `true`.
@@ -87,6 +91,10 @@ export class SyntheticsAPITestStep {
       baseName: "extractedValuesFromScript",
       type: "string",
     },
+    id: {
+      baseName: "id",
+      type: "string",
+    },
     isCritical: {
       baseName: "isCritical",
       type: "boolean",

services/synthetics/src/v1/models/SyntheticsAPIWaitStep.ts

@@ -6,6 +6,10 @@ import { SyntheticsAPIWaitStepSubtype } from "./SyntheticsAPIWaitStepSubtype";
  * The Wait step used in a Synthetic multi-step API test.
  */
 export class SyntheticsAPIWaitStep {
+  /**
+   * ID of the step.
+   */
+  "id"?: string;
   /**
    * The name of the step.
    */
@@ -33,6 +37,10 @@ export class SyntheticsAPIWaitStep {
    * @ignore
    */
   static readonly attributeTypeMap: AttributeTypeMap = {
+    id: {
+      baseName: "id",
+      type: "string",
+    },
     name: {
       baseName: "name",
       type: "string",