feat(run)!: update the API

BREAKING CHANGE: This release has breaking changes.

#### run:v2

The following keys were deleted:
- schemas.GoogleCloudRunV2Job.properties.etag.readOnly
- schemas.GoogleCloudRunV2Service.properties.etag.readOnly
- schemas.GoogleCloudRunV2WorkerPool.properties.etag.readOnly

The following keys were changed:
- schemas.GoogleCloudRunV2Job.properties.etag.description
- schemas.GoogleCloudRunV2Service.properties.etag.description
- schemas.GoogleCloudRunV2WorkerPool.properties.etag.description

Author: yoshi-automation

discovery/run-v2.json

@@ -1922,7 +1922,7 @@
       }
     }
   },
-  "revision": "20250712",
+  "revision": "20250718",
   "rootUrl": "https://run.googleapis.com/",
   "schemas": {
     "GoogleCloudRunV2BinaryAuthorization": {
@@ -2958,8 +2958,7 @@
           "type": "string"
         },
         "etag": {
-          "description": "Output only. A system-generated fingerprint for this version of the resource. May be used to detect modification conflict during updates.",
-          "readOnly": true,
+          "description": "Optional. A system-generated fingerprint for this version of the resource. May be used to detect modification conflict during updates.",
           "type": "string"
         },
         "executionCount": {
@@ -3844,8 +3843,7 @@
           "type": "string"
         },
         "etag": {
-          "description": "Output only. A system-generated fingerprint for this version of the resource. May be used to detect modification conflict during updates.",
-          "readOnly": true,
+          "description": "Optional. A system-generated fingerprint for this version of the resource. May be used to detect modification conflict during updates.",
           "type": "string"
         },
         "expireTime": {
@@ -4675,8 +4673,7 @@
           "type": "string"
         },
         "etag": {
-          "description": "Output only. A system-generated fingerprint for this version of the resource. May be used to detect modification conflict during updates.",
-          "readOnly": true,
+          "description": "Optional. A system-generated fingerprint for this version of the resource. May be used to detect modification conflict during updates.",
           "type": "string"
         },
         "expireTime": {

src/apis/run/v2.ts

@@ -779,7 +779,7 @@ export namespace run_v2 {
      */
     deleteTime?: string | null;
     /**
-     * Output only. A system-generated fingerprint for this version of the resource. May be used to detect modification conflict during updates.
+     * Optional. A system-generated fingerprint for this version of the resource. May be used to detect modification conflict during updates.
      */
     etag?: string | null;
     /**
@@ -1405,7 +1405,7 @@ export namespace run_v2 {
      */
     description?: string | null;
     /**
-     * Output only. A system-generated fingerprint for this version of the resource. May be used to detect modification conflict during updates.
+     * Optional. A system-generated fingerprint for this version of the resource. May be used to detect modification conflict during updates.
      */
     etag?: string | null;
     /**
@@ -1981,7 +1981,7 @@ export namespace run_v2 {
      */
     description?: string | null;
     /**
-     * Output only. A system-generated fingerprint for this version of the resource. May be used to detect modification conflict during updates.
+     * Optional. A system-generated fingerprint for this version of the resource. May be used to detect modification conflict during updates.
      */
     etag?: string | null;
     /**