Bump Symfony version to 4.4.16

Author: fabpot

Kernel.php

@@ -76,12 +76,12 @@ abstract class Kernel implements KernelInterface, RebootableInterface, Terminabl
 
     private static $freshCache = [];
 
-    const VERSION = '4.4.15';
-    const VERSION_ID = 40415;
+    const VERSION = '4.4.16-DEV';
+    const VERSION_ID = 40416;
     const MAJOR_VERSION = 4;
     const MINOR_VERSION = 4;
-    const RELEASE_VERSION = 15;
-    const EXTRA_VERSION = '';
+    const RELEASE_VERSION = 16;
+    const EXTRA_VERSION = 'DEV';
 
     const END_OF_MAINTENANCE = '11/2022';
     const END_OF_LIFE = '11/2023';