You can stop update specific plugin with below code.

function filter_plugin_updates( $value ) {
unset( $value->response[‘boopis-woocommerce-rfq/boopis-rfq.php’] );
unset( $value->response[‘tw-recent-posts-widget/tw-recent-posts-widget.php’] );

return $value;
}
add_filter( ‘site_transient_update_plugins’, ‘filter_plugin_updates’ );