fix: add missing [] to Promise.all calls (#12077)

lib/dialects/abstract/connection-manager.js

@@ -180,16 +180,16 @@ class ConnectionManager {
         debug('connection destroy');
         debug('connection destroy');
       },
       },
       destroyAllNow: () => {
       destroyAllNow: () => {
-        return Promise.all(
+        return Promise.all([
           this.pool.read.destroyAllNow(),
           this.pool.read.destroyAllNow(),
           this.pool.write.destroyAllNow()
           this.pool.write.destroyAllNow()
-        ).then(() => { debug('all connections destroyed'); });
+        ]).then(() => { debug('all connections destroyed'); });
       },
       },
       drain: () => {
       drain: () => {
-        return Promise.all(
+        return Promise.all([
           this.pool.write.drain(),
           this.pool.write.drain(),
           this.pool.read.drain()
           this.pool.read.drain()
-        );
+        ]);
       },
       },
       read: new Pool({
       read: new Pool({
         name: 'sequelize:read',
         name: 'sequelize:read',