Edit a Booking

[Lillith13]

Update and return an existing booking.

• [x] An authenticated user is required for a successful response
• [x] Only the owner of the booking is authorized to edit
• [x] Booking record is updated in the database after request
• [x] Booking data returned includes the id, userId, spotId, startDate, endDate, createdAt, and updatedAt
• [x] Error response with status 404 is given when a booking does not exist with the provided id
• [x] Error response with status 400 is given when it is past the booking's endDate (no editing of past bookings)
• [x] Error response with status 403 is given when a booking already exists for the spot on the specified dates