feat(all): auto-regenerate discovery clients (#3431)

Author: yoshi-automation

cloudbuild/v1/cloudbuild-api.json

@@ -66,6 +66,11 @@
       "endpointUrl": "https://cloudbuild.asia-southeast2.rep.googleapis.com/",
       "location": "asia-southeast2"
     },
+    {
+      "description": "Regional Endpoint",
+      "endpointUrl": "https://cloudbuild.asia-southeast3.rep.googleapis.com/",
+      "location": "asia-southeast3"
+    },
     {
       "description": "Regional Endpoint",
       "endpointUrl": "https://cloudbuild.australia-southeast1.rep.googleapis.com/",
@@ -141,6 +146,11 @@
       "endpointUrl": "https://cloudbuild.europe-west9.rep.googleapis.com/",
       "location": "europe-west9"
     },
+    {
+      "description": "Regional Endpoint",
+      "endpointUrl": "https://cloudbuild.europe-west15.rep.googleapis.com/",
+      "location": "europe-west15"
+    },
     {
       "description": "Regional Endpoint",
       "endpointUrl": "https://cloudbuild.me-central1.rep.googleapis.com/",
@@ -2573,7 +2583,7 @@
       }
     }
   },
-  "revision": "20251125",
+  "revision": "20260106",
   "rootUrl": "https://cloudbuild.googleapis.com/",
   "schemas": {
     "ApprovalConfig": {
@@ -3905,7 +3915,7 @@
       "id": "DefaultServiceAccount",
       "properties": {
         "name": {
-          "description": "Identifier. Format: `projects/{project}/locations/{location}/defaultServiceAccount",
+          "description": "Identifier. Format: `projects/{project}/locations/{location}/defaultServiceAccount`.",
           "type": "string"
         },
         "serviceAccountEmail": {

cloudbuild/v1/cloudbuild-gen.go

@@ -66,6 +66,11 @@
       "endpointUrl": "https://cloudbuild.asia-southeast2.rep.googleapis.com/",
       "location": "asia-southeast2"
     },
+    {
+      "description": "Regional Endpoint",
+      "endpointUrl": "https://cloudbuild.asia-southeast3.rep.googleapis.com/",
+      "location": "asia-southeast3"
+    },
     {
       "description": "Regional Endpoint",
       "endpointUrl": "https://cloudbuild.australia-southeast1.rep.googleapis.com/",
@@ -141,6 +146,11 @@
       "endpointUrl": "https://cloudbuild.europe-west9.rep.googleapis.com/",
       "location": "europe-west9"
     },
+    {
+      "description": "Regional Endpoint",
+      "endpointUrl": "https://cloudbuild.europe-west15.rep.googleapis.com/",
+      "location": "europe-west15"
+    },
     {
       "description": "Regional Endpoint",
       "endpointUrl": "https://cloudbuild.me-central1.rep.googleapis.com/",
@@ -1087,7 +1097,7 @@
       }
     }
   },
-  "revision": "20251021",
+  "revision": "20260106",
   "rootUrl": "https://cloudbuild.googleapis.com/",
   "schemas": {
     "AuditConfig": {