[BUG]: create_pull_request_comment's line needs to be optional to use optional subject_type

[Al-Campuzano]

What happened?

Trying to leave a comment on a file-level does not work using the create_pull_request_comment because i have to pass nil as the line number, and then the option hash { subject_type: "file" } (as per the GitHub docs, line is optional when using subject_type: file (screenshot))
However, doing so passes the explicit key line: nil to the GitHub endpoint and that results in the following error:

{
  "message": "Invalid request.\n\nNo subschema in \"oneOf\" matched.\n\"position\" wasn't supplied.\n\"in_reply_to\" wasn't supplied.\n\"subject_type\" is not a permitted key.\nFor 'properties/line', nil is not an integer.\n\"line\" is not a permitted key.",
  "documentation_url": "https://docs.github.com/rest/pulls/comments#create-a-review-comment-for-a-pull-request",
  "status": "422"
}

Locally i put a breakpoint after line 215 here and manually deleted the line key from the options hash, then let the post request continue with the modified hash and the comment was created successfully on the PR.

Versions

Octokit.rb v9.1.0
Ruby 3.3.1

Relevant log output

/Users/albertocampuzano/.gem/ruby/3.3.1/gems/octokit-9.1.0/lib/octokit/response/raise_error.rb:14:in `on_complete': POST https://api.github.com/repositories/103479113/pulls/1460/comments: 422 - Invalid request. (Octokit::UnprocessableEntity)

No subschema in "oneOf" matched.
"position" wasn't supplied.
"in_reply_to" wasn't supplied.
"subject_type" is not a permitted key.
For 'properties/line', nil is not an integer.
"line" is not a permitted key. // See: https://docs.github.com/rest/pulls/comments#create-a-review-comment-for-a-pull-request

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