Merge branch 'version_update' into '7.4.0'

version updated to 740RC

See merge request !826

vtigerversion.php

@@ -10,7 +10,7 @@
 
 $patch_version = '20210710'; // -ve timestamp before release, +ve timestamp after release.
 $modified_database = '';
-$vtiger_current_version = '7.4.0';
+$vtiger_current_version = '7.4.0RC';
 $_SESSION['vtiger_version'] = $vtiger_current_version;
 
 ?>