feat(spanner)!: update the API

BREAKING CHANGE: This release has breaking changes.
#### spanner:v1
The following keys were deleted:
- schemas.Binding.properties.bindingId.description

The following keys were changed:
- schemas.Field.properties.name.description

discovery/spanner-v1.json

@@ -1895,7 +1895,7 @@
       }
     }
   },
-  "revision": "20200916",
+  "revision": "20201029",
   "rootUrl": "https://spanner.googleapis.com/",
   "schemas": {
     "Backup": {
@@ -2019,7 +2019,6 @@
       "id": "Binding",
       "properties": {
         "bindingId": {
-          "description": "A client-specified ID for this binding. Expected to be globally unique to support the internal bindings-by-ID API.",
           "type": "string"
         },
         "condition": {
@@ -2392,7 +2391,7 @@
       "id": "Field",
       "properties": {
         "name": {
-          "description": "The name of the field. For reads, this is the column name. For SQL queries, it is the column alias (e.g., `\"Word\"` in the query `\"SELECT 'hello' AS Word\"`), or the column name (e.g., `\"ColName\"` in the query `\"SELECT ColName FROM Table\"`). Some columns might have an empty name (e.g., !\"SELECT UPPER(ColName)\"`). Note that a query result can contain multiple fields with the same name.",
+          "description": "The name of the field. For reads, this is the column name. For SQL queries, it is the column alias (e.g., `\"Word\"` in the query `\"SELECT 'hello' AS Word\"`), or the column name (e.g., `\"ColName\"` in the query `\"SELECT ColName FROM Table\"`). Some columns might have an empty name (e.g., `\"SELECT UPPER(ColName)\"`). Note that a query result can contain multiple fields with the same name.",
           "type": "string"
         },
         "type": {

src/apis/spanner/v1.ts

@@ -208,9 +208,6 @@ export namespace spanner_v1 {
    * Associates `members` with a `role`.
    */
   export interface Schema$Binding {
-    /**
-     * A client-specified ID for this binding. Expected to be globally unique to support the internal bindings-by-ID API.
-     */
     bindingId?: string | null;
     /**
      * The condition that is associated with this binding. If the condition evaluates to `true`, then this binding applies to the current request. If the condition evaluates to `false`, then this binding does not apply to the current request. However, a different role binding might grant the same role to one or more of the members in this binding. To learn which resources support conditions in their IAM policies, see the [IAM documentation](https://cloud.google.com/iam/help/conditions/resource-policies).
@@ -489,7 +486,7 @@ export namespace spanner_v1 {
    */
   export interface Schema$Field {
     /**
-     * The name of the field. For reads, this is the column name. For SQL queries, it is the column alias (e.g., `"Word"` in the query `"SELECT 'hello' AS Word"`), or the column name (e.g., `"ColName"` in the query `"SELECT ColName FROM Table"`). Some columns might have an empty name (e.g., !"SELECT UPPER(ColName)"`). Note that a query result can contain multiple fields with the same name.
+     * The name of the field. For reads, this is the column name. For SQL queries, it is the column alias (e.g., `"Word"` in the query `"SELECT 'hello' AS Word"`), or the column name (e.g., `"ColName"` in the query `"SELECT ColName FROM Table"`). Some columns might have an empty name (e.g., `"SELECT UPPER(ColName)"`). Note that a query result can contain multiple fields with the same name.
      */
     name?: string | null;
     /**