chore(login): update the login banners (#48966)

Updated login banner to include upcoming webinars for session replay and
the frontend error monitoring webinars.

src/sentry/templates/sentry/partial/alerts.html

@@ -78,9 +78,9 @@
   <div class="alert-banner">
     <div class="alert-message">
       {% if banner_choice == 0 %}
-      Join the upcoming livestream AMA to learn how Profiling can help solve code-level performance bottlenecks. &nbsp<a target="_blank" href="https://sentry.io/resources/profiling-ama/?utm_medium=banner&utm_source=sentry-app&utm_campaign=login-profiling-ama-511&utm_content=login-banner&utm_term=">Register</a>.
+      Need a quick refresh on frontend error monitoring? Join the upcoming 20 minute livestream on frontend error monitoring. &nbsp<a target="_blank" href="https://sentry.io/resources/livestream-ama-frontend-error-monitoring-101/?utm_medium=banner&utm_source=sentry-app&utm_campaign=frontend-error-webinar-may&utm_content=login-banner&utm_term=">Register</a>.
       {% elif banner_choice == 1 %}
-      Learn how Spend Allocation and Spike Protection can help you confidently manage multiple Sentry projects. &nbsp<a target="_blank" href="https://blog.sentry.io/2023/04/18/multiple-projects-on-sentry-new-spend-allocation-spike-protection/?utm_medium=banner&utm_source=sentry-app&utm_campaign=login-spend-allocation&utm_content=login-banner&utm_term=">Read more</a>.
+      Join the livestream AMA on Session Replay to learn about new and upcoming features that help you debug faster. &nbsp<a target="_blank" href="https://sentry.io/resources/session-replay-troubleshooting/?utm_medium=banner&utm_source=sentry-app&utm_campaign=session-replay-webinar-may&utm_content=login-banner&utm_term=">Register</a>.
       {% endif %}
     </div>
   </div>