Add snippet for enabling google genai to changelog

Author: alexander-alderman-webb

CHANGELOG.md

@@ -8,6 +8,24 @@
 - tests: Update tox (#4913) by @sentrivana
 - fix(Ray): Retain the original function name when patching Ray tasks (#4858) by @svartalf
 - feat(ai): Add `python-genai` integration (#4891) by @vgrozdanic
+  Enable the new Google GenAI integration with the code snippet below, and you can use the Sentry AI dashboards to observe your AI calls:
+
+  ```python
+  import sentry_sdk
+  from sentry_sdk.integrations.google_genai import GoogleGenAIIntegration
+  sentry_sdk.init(
+      dsn="<your-dsn>",
+      # Set traces_sample_rate to 1.0 to capture 100%
+      # of transactions for tracing.
+      traces_sample_rate=1.0,
+      # Add data like inputs and responses;
+      # see https://docs.sentry.io/platforms/python/data-management/data-collected/ for more info
+      send_default_pii=True,
+      integrations=[
+          GoogleGenAIIntegration(),
+      ],
+  )
+  ```
 
 ## 2.41.0