fix(deps): update dependency @netlify/open-api to ^0.18.0

package.json

@@ -54,7 +54,7 @@
     "node client"
   ],
   "dependencies": {
-    "@netlify/open-api": "^0.16.0",
+    "@netlify/open-api": "^0.18.0",
     "@netlify/zip-it-and-ship-it": "^1.3.12",
     "backoff": "^2.5.0",
     "clean-deep": "^3.3.0",

src/operations.test.js.md

@@ -10240,6 +10240,99 @@ Generated by [AVA](https://ava.li).
         ],
         verb: 'delete',
       },
+      {
+        operationId: 'listServiceInstancesForSite',
+        parameters: {
+          body: {},
+          path: {
+            site_id: {
+              in: 'path',
+              name: 'site_id',
+              required: true,
+              type: 'string',
+            },
+          },
+          query: {},
+        },
+        path: '/sites/{site_id}/service-instances',
+        responses: {
+          200: {
+            description: 'OK',
+            schema: {
+              items: {
+                properties: {
+                  auth_url: {
+                    type: 'string',
+                  },
+                  config: {
+                    type: 'object',
+                  },
+                  created_at: {
+                    format: 'dateTime',
+                    type: 'string',
+                  },
+                  env: {
+                    type: 'object',
+                  },
+                  external_attributes: {
+                    type: 'object',
+                  },
+                  id: {
+                    type: 'string',
+                  },
+                  service_name: {
+                    type: 'string',
+                  },
+                  service_path: {
+                    type: 'string',
+                  },
+                  service_slug: {
+                    type: 'string',
+                  },
+                  snippets: {
+                    items: {
+                      type: 'object',
+                    },
+                    type: 'array',
+                  },
+                  updated_at: {
+                    format: 'dateTime',
+                    type: 'string',
+                  },
+                  url: {
+                    type: 'string',
+                  },
+                },
+                type: 'object',
+              },
+              type: 'array',
+            },
+          },
+          default: {
+            description: 'error',
+            schema: {
+              properties: {
+                code: {
+                  format: 'int64',
+                  type: 'integer',
+                },
+                message: {
+                  type: 'string',
+                  'x-nullable': false,
+                },
+              },
+              required: [
+                'message',
+              ],
+              type: 'object',
+            },
+          },
+        },
+        tags: [
+          'serviceInstance',
+        ],
+        verb: 'get',
+      },
       {
         consumes: [
           'application/json',
@@ -10376,8 +10469,8 @@ Generated by [AVA](https://ava.li).
         },
         path: '/sites/{site_id}/services/{addon}/instances/{instance_id}',
         responses: {
-          201: {
-            description: 'Created',
+          200: {
+            description: 'OK',
             schema: {
               properties: {
                 auth_url: {
@@ -10491,7 +10584,7 @@ Generated by [AVA](https://ava.li).
         path: '/sites/{site_id}/services/{addon}/instances/{instance_id}',
         responses: {
           204: {
-            description: 'Created',
+            description: 'No Content',
           },
           default: {
             description: 'error',