docs(readme): add Sonā to the list of Web Perf services

Author: homj

readme.md

@@ -364,6 +364,8 @@ This section details services that have integrated Lighthouse data. If you're wo
 
 * **[Guardius](https://guardius.io)** - Guardius is a DevOps and DevSecOps SaaS platform that integrates Lighthouse to deliver automated web performance analysis. It not only provides metrics evaluation and automatic scanning but also enables performance comparisons across different periods and ongoing observation over time. Additionally, Guardius offers predefined and customized alerts tailored to your specific requirements. A free version of Guardius is available for users to explore its features.
 
+* **[Sonā](https://getsona.io)** - Powered by Lighthouse amongst others, Sonā delivers in-depth insights into your website’s health. Track changes over time, share reports, and receive actionable recommendations to improve performance, accessibility, SEO, best practices, and security. Sonā helps you make your website healthy — try it now for **free**.
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 ## Lighthouse Integrations in non-Web Perf services
 
 * **[PageWatch](https://pagewatch.dev/)** — PageWatch is a tool to find problem pages on your website.  It provides insights into spelling errors, layout issues, slow pages (powered by Lighthouse) and more.  PageWatch is offered via free and paid plans.