feat(migrationcenter): update the api

#### migrationcenter:v1

The following keys were added:
- schemas.BatchDeleteAssetsRequest.properties.cascadingRules (Total Keys: 2)
- schemas.CascadeLogicalDBsRule (Total Keys: 2)
- schemas.CascadingRule (Total Keys: 3)

Author: yoshi-automation

docs/dyn/migrationcenter_v1.projects.locations.assets.html

@@ -183,6 +183,12 @@ <h3>Method Details</h3>
 
 { # A request to delete a list of asset.
   &quot;allowMissing&quot;: True or False, # Optional. When this value is set to `true` the request is a no-op for non-existing assets. See https://google.aip.dev/135#delete-if-existing for additional details. Default value is `false`.
+  &quot;cascadingRules&quot;: [ # Optional. Optional cascading rules for deleting related assets.
+    { # Specifies cascading rules for traversing relations.
+      &quot;cascadeLogicalDbs&quot;: { # Cascading rule for related logical DBs. # Cascading rule for related logical DBs.
+      },
+    },
+  ],
   &quot;names&quot;: [ # Required. The IDs of the assets to delete. A maximum of 1000 assets can be deleted in a batch. Format: projects/{project}/locations/{location}/assets/{name}.
     &quot;A String&quot;,
   ],

googleapiclient/discovery_cache/documents/migrationcenter.v1.json

@@ -2407,7 +2407,7 @@
 }
 }
 },
-"revision": "20250422",
+"revision": "20250429",
 "rootUrl": "https://migrationcenter.googleapis.com/",
 "schemas": {
 "AddAssetsToGroupRequest": {
@@ -2890,6 +2890,13 @@
 "description": "Optional. When this value is set to `true` the request is a no-op for non-existing assets. See https://google.aip.dev/135#delete-if-existing for additional details. Default value is `false`.",
 "type": "boolean"
 },
+"cascadingRules": {
+"description": "Optional. Optional cascading rules for deleting related assets.",
+"items": {
+"$ref": "CascadingRule"
+},
+"type": "array"
+},
 "names": {
 "description": "Required. The IDs of the assets to delete. A maximum of 1000 assets can be deleted in a batch. Format: projects/{project}/locations/{location}/assets/{name}.",
 "items": {
@@ -2966,6 +2973,23 @@
 "properties": {},
 "type": "object"
 },
+"CascadeLogicalDBsRule": {
+"description": "Cascading rule for related logical DBs.",
+"id": "CascadeLogicalDBsRule",
+"properties": {},
+"type": "object"
+},
+"CascadingRule": {
+"description": "Specifies cascading rules for traversing relations.",
+"id": "CascadingRule",
+"properties": {
+"cascadeLogicalDbs": {
+"$ref": "CascadeLogicalDBsRule",
+"description": "Cascading rule for related logical DBs."
+}
+},
+"type": "object"
+},
 "ComputeEngineMigrationTarget": {
 "description": "Compute engine migration target.",
 "id": "ComputeEngineMigrationTarget",