Removed Bluebird dependency (#17831)

refs #14882

- this removes the last usage of Bluebird within Ghost and removes the dependency as it's no longer required within the codebase

ghost/core/core/server/models/base/plugins/raw-knex.js

@@ -1,7 +1,6 @@
 const _ = require('lodash');
 const debug = require('@tryghost/debug')('models:base:raw-knex');
 const plugins = require('@tryghost/bookshelf-plugins');
-const Promise = require('bluebird');
 
 const schema = require('../../../data/schema');
 
@@ -166,10 +165,12 @@ module.exports = function (Bookshelf) {
                         })();
                     });
 
-                    return Promise.props(props)
-                        .then((relationsToAttach) => {
+                    return Promise.all(Object.values(props))
+                        .then((relationsToAttachArray) => {
                             debug('attach relations', modelName);
 
+                            const relationsToAttach = _.zipObject(_.keys(props), relationsToAttachArray);
+
                             objects = _.map(objects, (object) => {
                                 _.each(Object.keys(relationsToAttach), (relation) => {
                                     if (!relationsToAttach[relation][object.id]) {

ghost/core/package.json

@@ -163,7 +163,6 @@
     "@tryghost/zip": "1.1.37",
     "amperize": "0.6.1",
     "analytics-node": "6.2.0",
-    "bluebird": "3.7.2",
     "body-parser": "1.20.2",
     "bookshelf": "1.2.0",
     "bookshelf-relations": "2.6.0",