chore: Add link to build and test icon in readme (#17719)

Author: Olexandr88

README.md

@@ -8,7 +8,7 @@ _Bad software is everywhere, and we're tired of it. Sentry is on a mission to he
 faster, so we can get back to enjoying technology. If you want to join us
 [<kbd>**Check out our open positions**</kbd>](https://sentry.io/careers/)_
 
-![Build & Test](https://github.com/getsentry/sentry-javascript/workflows/CI:%20Build%20&%20Test/badge.svg)
+[![Build & Test](https://github.com/getsentry/sentry-javascript/workflows/CI:%20Build%20&%20Test/badge.svg)](https://github.com/getsentry/sentry-javascript/actions)
 [![codecov](https://codecov.io/gh/getsentry/sentry-javascript/branch/develop/graph/badge.svg)](https://codecov.io/gh/getsentry/sentry-javascript)
 [![npm version](https://img.shields.io/npm/v/@sentry/core.svg)](https://www.npmjs.com/package/@sentry/core)
 [![Discord](https://img.shields.io/discord/621778831602221064)](https://discord.gg/Ww9hbqr)