can't believe I've screwed up the load_plugin_textdomain for so long

and it still works

github-updater.php

@@ -45,7 +45,7 @@
 }
 
 // Load textdomain
-load_plugin_textdomain( 'github-updater', false, __DIR__ . '/languages' );
+load_plugin_textdomain( 'github-updater', false, basename( __DIR__  ) . '/languages' );
 
 // Plugin namespace root
 $root = array( 'Fragen\\GitHub_Updater' => __DIR__ . '/src/GitHub_Updater' );