[CMGR-50789] update postman collection for publicly accessing CM APIs

src/pages/guides/getting-started/getting-started-with-postman.md

@@ -25,7 +25,6 @@ This collection defines a number of variables which are used in the contained re
 
 * `host_name` - The Cloud Manager API host name, `cloudmanager.adobe.io`.
 * `ims_endpoint` - The host name for the Adobe Identity Management System (IMS), `ims-na1.adobelogin.com`.
-* `cloudmanager_claim` - The access claim used in the JWT token, `https://ims-na1.adobelogin.com/s/ent_cloudmgr_sdk`.
 
 ## Configuration
 
@@ -35,16 +34,18 @@ The requests in this collection depend upon a set of Postman environment variabl
 
 Then click on the eye icon to view the environment variables and click the Edit link to edit the variables.
 
-![Postman Environment Details](img/postman-editenvironment.png)
+![Postman Environment Details](img/postman-environment-edit-click.png)
 
-Four of these values need to be populated using the values displayed in the Adobe Developer Console.
+![Postman Environment Edit Details](img/postman-after-environment-edit-click.png)
+
+Six of these values need to be populated using the values displayed in the Adobe Developer Console.
 
 * `api_key`
 * `organization_id`
 * `technical_account_id`
+* `client_id`
 * `client_secret`
-
-The `private_key` variable needs to be populated with the contents of the `private.key` file generated by Open SSL as described in the [Adobe I/O JWT Documentation](https://developer.adobe.com/developer-console/docs/guides/authentication/JWT/JWTCertificate/).
+* `scopes`
 
 ## Obtaining the Access Token
 
@@ -54,8 +55,12 @@ Once the environment variables are populated, open the Obtain Access Token reque
 
 This will automatically set the `access_token` environment variable with a token which is valid for 24 hours. If you need to refresh it, just re-send this request.
 
+<InlineAlert slots="text" variant="warning"/>
+
+Note that generation of JWT access token is deprecated in favor of the OAuth Server-to-Server credentials. Creating new JWT credentials will stop by May 1, 2024. [Learn more](../../../developer-console/docs/guides/authentication/JWT/index.md).
+
 ## Executing Other Requests
 
 In addition to the Obtain Access Token request, the collection includes other requests which can be executed.
 
-If you create your own requests in Postman, keep in mind that they must always include the `Authorization`, `x-gw-ims-org-id`, and `x-api-key` headers. The `Authorization` header will be automatically inherited for requests defined in the `Cloud Manager Public API` collection, but if you create your own requests outside of this collection, you will need to configure this header, using the `access_token` envrionment variable.
+If you create your own requests in Postman, keep in mind that they must always include the `Authorization`, `x-gw-ims-org-id`, and `x-api-key` headers. The `Authorization` header will be automatically inherited for requests defined in the `Cloud Manager Public API` collection, but if you create your own requests outside of this collection, you will need to configure this header, using the `access_token` environment variable.