Add slides to June 2024 USWDS Event Page

[brunerae]

Adding slides to the event page.

Summary

Basic description of work done. Closes [#issue_no].

Preview

[Link to Preview]()

Solution

How To Test

1. First Step
2. Second Step
3. Third Step

---

Dev Checklist

• [ ] PR has correct labels
• [ ] A11y testing (voice over testing, meets WCAG, run axe tools)
• [ ] Code is formatted properly

[github-actions[bot]]

:mag: Preview in Federalist