Remove the vendor directory in .gitignore as these dependencies are needed for php-imap

plugins/php-imap/vendor/illuminate/contracts/Redis/Factory.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace Illuminate\Contracts\Redis;
+
+interface Factory
+{
+    /**
+     * Get a Redis connection by name.
+     *
+     * @param  string|null  $name
+     * @return \Illuminate\Redis\Connections\Connection
+     */
+    public function connection($name = null);
+}