GitHub Actions Billing returns total_minutes_used and included_minutes as float64

[loispostula]

GitHub returns the total_paid_minutes_used value as float64 in the /orgs/{org}/settings/billing/actions endpoint.
Currently an Int is expected.
Example

curl -H "Authorization: Bearer <TOKEN>" \
-H "Accept: application/vnd.github.v3+json"  \
https://api.github.com/orgs/{org}/settings/billing/actions

{
  "total_minutes_used": 1234.0,
  "total_paid_minutes_used": 3959.0,
  "included_minutes": 3000.0,
  "minutes_used_breakdown": {
    "UBUNTU": 1234,
    "MACOS": 1234,
    "WINDOWS": 0
  }
}

This is similar to: #2283