feat(workstations): update the API

#### workstations:v1beta

The following keys were added:
- schemas.GatewayConfig.description
- schemas.GatewayConfig.id
- schemas.GatewayConfig.properties.http2Enabled.description
- schemas.GatewayConfig.properties.http2Enabled.type
- schemas.GatewayConfig.type
- schemas.WorkstationCluster.properties.gatewayConfig.$ref
- schemas.WorkstationCluster.properties.gatewayConfig.description

#### workstations:v1

The following keys were added:
- schemas.GatewayConfig.description
- schemas.GatewayConfig.id
- schemas.GatewayConfig.properties.http2Enabled.description
- schemas.GatewayConfig.properties.http2Enabled.type
- schemas.GatewayConfig.type
- schemas.WorkstationCluster.properties.gatewayConfig.$ref
- schemas.WorkstationCluster.properties.gatewayConfig.description

Author: yoshi-automation

discovery/workstations-v1.json

@@ -1216,7 +1216,7 @@
       }
     }
   },
-  "revision": "20250326",
+  "revision": "20250604",
   "rootUrl": "https://workstations.googleapis.com/",
   "schemas": {
     "Accelerator": {
@@ -1452,6 +1452,17 @@
       },
       "type": "object"
     },
+    "GatewayConfig": {
+      "description": "Configuration options for Cluster HTTP Gateway.",
+      "id": "GatewayConfig",
+      "properties": {
+        "http2Enabled": {
+          "description": "Optional. Whether HTTP/2 is enabled for this workstation cluster. Defaults to false.",
+          "type": "boolean"
+        }
+      },
+      "type": "object"
+    },
     "GceConfidentialInstanceConfig": {
       "description": "A set of Compute Engine Confidential VM instance options.",
       "id": "GceConfidentialInstanceConfig",
@@ -2368,6 +2379,10 @@
           "description": "Optional. Checksum computed by the server. May be sent on update and delete requests to make sure that the client has an up-to-date value before proceeding.",
           "type": "string"
         },
+        "gatewayConfig": {
+          "$ref": "GatewayConfig",
+          "description": "Optional. Configuration options for Cluster HTTP Gateway."
+        },
         "labels": {
           "additionalProperties": {
             "type": "string"

discovery/workstations-v1beta.json

@@ -1142,7 +1142,7 @@
       }
     }
   },
-  "revision": "20250326",
+  "revision": "20250604",
   "rootUrl": "https://workstations.googleapis.com/",
   "schemas": {
     "Accelerator": {
@@ -1378,6 +1378,17 @@
       },
       "type": "object"
     },
+    "GatewayConfig": {
+      "description": "Configuration options for Cluster HTTP Gateway.",
+      "id": "GatewayConfig",
+      "properties": {
+        "http2Enabled": {
+          "description": "Optional. Whether HTTP/2 is enabled for this workstation cluster. Defaults to false.",
+          "type": "boolean"
+        }
+      },
+      "type": "object"
+    },
     "GceConfidentialInstanceConfig": {
       "description": "A set of Compute Engine Confidential VM instance options.",
       "id": "GceConfidentialInstanceConfig",
@@ -2300,6 +2311,10 @@
           "description": "Optional. Checksum computed by the server. May be sent on update and delete requests to make sure that the client has an up-to-date value before proceeding.",
           "type": "string"
         },
+        "gatewayConfig": {
+          "$ref": "GatewayConfig",
+          "description": "Optional. Configuration options for Cluster HTTP Gateway."
+        },
         "labels": {
           "additionalProperties": {
             "type": "string"