Bumped RC version

Signed-off-by: snipe <[email protected]>

Author: snipe

config/version.php

@@ -1,10 +1,10 @@
 <?php
 return array (
-  'app_version' => 'v6.0.0-RC3',
-  'full_app_version' => 'v6.0.0-RC3 - build 6627-g2815e0d36',
-  'build_version' => '6627',
+  'app_version' => 'v6.0.0-RC-4',
+  'full_app_version' => 'v6.0.0-RC-4 - build 6754-gafd83311a',
+  'build_version' => '6754',
   'prerelease_version' => '',
-  'hash_version' => 'g2815e0d36',
-  'full_hash' => 'v6.0.0-RC3-6-g2815e0d36',
+  'hash_version' => 'gafd83311a',
+  'full_hash' => 'v6.0.0-RC-4-1-gafd83311a',
   'branch' => 'develop',
 );