fix: cloud-9 preview has been removed (#32)

Author: greenkeeper[bot]

package-lock.json

@@ -37,7 +37,7 @@
   },
   "homepage": "https://github.com/octokit/plugin-scim.js#readme",
   "devDependencies": {
-    "@octokit/routes": "18.7.0",
+    "@octokit/routes": "18.7.1",
     "coveralls": "^3.0.2",
     "lodash.camelcase": "^4.3.0",
     "semantic-release": "^15.10.7",

package.json

@@ -1,8 +1,5 @@
 {
   "getProvisioningDetailsForUser": {
-    "headers": {
-      "accept": "application/vnd.github.cloud-9-preview+json"
-    },
     "method": "GET",
     "params": {
       "external_identity_guid": {
@@ -17,9 +14,6 @@
     "url": "/scim/v2/organizations/:org/Users/:external_identity_guid"
   },
   "listProvisionedIdentities": {
-    "headers": {
-      "accept": "application/vnd.github.cloud-9-preview+json"
-    },
     "method": "GET",
     "params": {
       "count": {
@@ -39,9 +33,6 @@
     "url": "/scim/v2/organizations/:org/Users"
   },
   "provisionAndInviteUsers": {
-    "headers": {
-      "accept": "application/vnd.github.cloud-9-preview+json"
-    },
     "method": "POST",
     "params": {
       "org": {
@@ -52,9 +43,6 @@
     "url": "/scim/v2/organizations/:org/Users"
   },
   "provisionInviteUsers": {
-    "headers": {
-      "accept": "application/vnd.github.cloud-9-preview+json"
-    },
     "method": "POST",
     "params": {
       "org": {
@@ -65,9 +53,6 @@
     "url": "/scim/v2/organizations/:org/Users"
   },
   "removeUserFromOrg": {
-    "headers": {
-      "accept": "application/vnd.github.cloud-9-preview+json"
-    },
     "method": "DELETE",
     "params": {
       "external_identity_guid": {
@@ -82,9 +67,6 @@
     "url": "/scim/v2/organizations/:org/Users/:external_identity_guid"
   },
   "updateProvisionedOrgMembership": {
-    "headers": {
-      "accept": "application/vnd.github.cloud-9-preview+json"
-    },
     "method": "PUT",
     "params": {
       "external_identity_guid": {
@@ -99,9 +81,6 @@
     "url": "/scim/v2/organizations/:org/Users/:external_identity_guid"
   },
   "updateUserAttribute": {
-    "headers": {
-      "accept": "application/vnd.github.cloud-9-preview+json"
-    },
     "method": "PATCH",
     "params": {
       "external_identity_guid": {