You can disable the update of a particular or all WordPress plug-ins in several ways, I’ll describe several of them:
1) Disable the update of a particular plug-in by changing its version in the code, for example to 99.9, but do not forget to comment out its real version in case you need to update.
2) To disable updates to all plug-ins, add the following line to the wp-config.php configuration file:
define( 'DISALLOW_FILE_MODS', true );
To completely disable all updates:
define( 'AUTOMATIC_UPDATER_DISABLED', true );