feat: update demo GIF with new dashboard design

Updated Remotion animation to reflect the enhanced dashboard:
- Added Insights to nav bar
- Updated stats to show billing cycle progress (Day 17/28)
- Added 8 users in bar chart (was 7)
- Updated alert message with opus-4.6 high-thinking model
- Refreshed data to match current dashboard capabilities

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: ofershap