Add missing Friendica\DI namespace to files (PHPStorm inspection)

src/Worker/CheckVersion.php

@@ -10,6 +10,7 @@ namespace Friendica\Worker;
 use Friendica\Core\Config;
 use Friendica\Core\Logger;
 use Friendica\Database\DBA;
+use Friendica\DI;
 use Friendica\Util\Network;
 
 /**

src/Worker/DBClean.php

@@ -10,6 +10,7 @@ use Friendica\Core\Config;
 use Friendica\Core\Logger;
 use Friendica\Core\Worker;
 use Friendica\Database\DBA;
+use Friendica\DI;
 
 class DBClean {
 	public static function execute($stage = 0) {

src/Worker/Directory.php

@@ -11,6 +11,7 @@ use Friendica\Core\Hook;
 use Friendica\Core\Logger;
 use Friendica\Core\Worker;
 use Friendica\Database\DBA;
+use Friendica\DI;
 use Friendica\Util\Network;
 
 class Directory

src/Worker/UpdateGContacts.php

@@ -9,6 +9,7 @@ use Friendica\Core\Logger;
 use Friendica\Core\Protocol;
 use Friendica\Core\Worker;
 use Friendica\Database\DBA;
+use Friendica\DI;
 use Friendica\Model\GContact;
 use Friendica\Model\GServer;
 use Friendica\Util\DateTimeFormat;

src/Worker/UpdateServerDirectories.php

@@ -6,6 +6,7 @@ namespace Friendica\Worker;
 
 use Friendica\Core\Config;
 use Friendica\Core\Logger;
+use Friendica\DI;
 use Friendica\Model\GContact;
 use Friendica\Model\GServer;
 use Friendica\Protocol\PortableContact;