feat(datastream): update the API

#### datastream:v1

The following keys were added:
- schemas.SourceHierarchyDatasets.properties.projectId.description
- schemas.SourceHierarchyDatasets.properties.projectId.type

Author: yoshi-automation

discovery/datastream-v1.json

@@ -1261,7 +1261,7 @@
       }
     }
   },
-  "revision": "20250518",
+  "revision": "20250627",
   "rootUrl": "https://datastream.googleapis.com/",
   "schemas": {
     "AppendOnly": {
@@ -3465,6 +3465,10 @@
         "datasetTemplate": {
           "$ref": "DatasetTemplate",
           "description": "The dataset template to use for dynamic dataset creation."
+        },
+        "projectId": {
+          "description": "Optional. The project id of the BigQuery dataset. If not specified, the project will be inferred from the stream resource.",
+          "type": "string"
         }
       },
       "type": "object"

src/apis/datastream/package.json

@@ -28,7 +28,7 @@
     "webpack": "webpack"
   },
   "dependencies": {
-    "googleapis-common": "^8.0.0"
+    "googleapis-common": "^8.0.2-rc.0"
   },
   "devDependencies": {
     "@microsoft/api-documenter": "^7.8.10",

src/apis/datastream/v1.ts

@@ -1858,6 +1858,10 @@ export namespace datastream_v1 {
      * The dataset template to use for dynamic dataset creation.
      */
     datasetTemplate?: Schema$DatasetTemplate;
+    /**
+     * Optional. The project id of the BigQuery dataset. If not specified, the project will be inferred from the stream resource.
+     */
+    projectId?: string | null;
   }
   /**
    * Represents an identifier of an object in the data source.