Update Klaviyo Plugin

We get this warning with the Klaviyo plugin. It is a critical site plugin, can you please update it?

Strict Standards: Non-static method WPKlaviyo::is_connected() should not be called statically, assuming $this from incompatible context in /nas/content/staging/dogisgood/wp-content/plugins/klaviyo/inc/kla-notice.php on line 15

https://ww.wp.xz.cn/plugins/klaviyo/