GitHub Actions Billing returns total_paid_minutes_used as float64

[raynigon]

Fixes #2283

GitHub Actions returns total_paid_minutes_used as floating point value.
The Implementation should accept this floating point value as float64.

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,
  "total_paid_minutes_used": 3959.0,
  "included_minutes": 3000,
  "minutes_used_breakdown": {
    "UBUNTU": 1234,
    "MACOS": 1234,
    "WINDOWS": 1234
  }
}

[codecov]

Codecov Report

Merging #2284 (757e1ce) into master (a842efc) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2284   +/-   ##
=======================================
  Coverage   97.83%   97.83%           
=======================================
  Files         115      115           
  Lines       10360    10360           
=======================================
  Hits        10136    10136           
  Misses        156      156           
  Partials       68       68           

Impacted Files	Coverage Δ
github/billing.go	100.00% <ø> (ø)

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[gmlewis]

Thank you, @raynigon !
LGTM.

Awaiting second LGTM/Approval from any other contributor to this repo before merging.

[gmlewis]

I'm driving several hundred miles today... I may be slow to respond.

[raynigon]

@Parker77 - do you have time to review this PR?

[Parker77]

LGTM!

[gmlewis]

Thank you, @Parker77 !
Merging.