Sync 'usage_metering.yaml' files with backend (#402)

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

.apigentools-info

@@ -4,13 +4,13 @@
     "spec_versions": {
         "v1": {
             "apigentools_version": "1.6.6",
-            "regenerated": "2024-12-02 14:34:48.145379",
-            "spec_repo_commit": "48a734bf"
+            "regenerated": "2024-12-02 17:23:02.435545",
+            "spec_repo_commit": "93ae89a8"
         },
         "v2": {
             "apigentools_version": "1.6.6",
-            "regenerated": "2024-12-02 14:34:48.165088",
-            "spec_repo_commit": "48a734bf"
+            "regenerated": "2024-12-02 17:23:02.454720",
+            "spec_repo_commit": "93ae89a8"
         }
     }
 }

.generator/schemas/v2/openapi.yaml

@@ -42741,6 +42741,10 @@ paths:
       summary: Get billing dimension mapping for usage endpoints
       tags:
       - Usage Metering
+      x-permission:
+        operator: OR
+        permissions:
+        - usage_read
       x-unstable: '**Note**: This endpoint is in Preview.
 
         If you have any feedback, contact [Datadog support](https://docs.datadoghq.com/help/).'