Fix missing CanReadBookings import in public API views

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

smoothschedule/smoothschedule/platform/api/views.py

@@ -34,6 +34,7 @@ from .permissions import (
     CanReadServices,
     CanReadResources,
     CanReadAvailability,
+    CanReadBookings,
     BookingsReadWritePermission,
     CustomersReadWritePermission,
     CanManageWebhooks,