udpate version number

ot_core/ext_emconf.php

@@ -18,7 +18,7 @@ $EM_CONF[$_EXTKEY] = [
     'uploadfolder' => 0,
     'createDirs' => '',
     'clearCacheOnLoad' => 0,
-    'version' => '0.6.4',
+    'version' => '0.6.5',
     'constraints' => [
         'depends' => [
             'typo3' => '8.7.0-10.4.99',