chore: Update logo for dark or light theme (#34229)

Author: mattjohnsonpint

README.md

@@ -1,7 +1,7 @@
 <p align="center">
   <p align="center">
     <a href="https://sentry.io/?utm_source=github&utm_medium=logo" target="_blank">
-      <img src="https://sentry-brand.storage.googleapis.com/sentry-logo-black.png" alt="Sentry" height="72">
+      <img src="https://sentry-brand.storage.googleapis.com/sentry-wordmark-dark-280x84.png" alt="Sentry" width="280" height="84">
     </a>
   </p>
   <p align="center">