Missing parameters when calling GithubApiFactory.Create() methods

The `GithubApiFactory.Create()` methods are expecting three parameters:

https://github.com/github/gh-gei/blob/4fbc5e57da664f577b1adc770fec161f603fb4b0/src/Octoshift/Factories/GithubApiFactory.cs#L29-L37

There are some occurrences where these methods are called only with two parameter. In the example below the `uploadsUrl` is not passed as `null`, instead the `PAT` is used.

https://github.com/github/gh-gei/blob/4fbc5e57da664f577b1adc770fec161f603fb4b0/src/gei/Commands/MigrateRepo/MigrateRepoCommand.cs#L193-L195

For reference:

https://github.com/github/gh-gei/blob/4fbc5e57da664f577b1adc770fec161f603fb4b0/src/gei/Factories/CodeScanningAlertServiceFactory.cs#L45-L47

Start in src/Octoshift/Factories/GithubApiFactory.cs at the Create() methods, then inspect the two-parameter call in src/gei/Commands/MigrateRepo/MigrateRepoCommand.cs and compare it with src/gei/Factories/CodeScanningAlertServiceFactory.cs. Find all calls that omit uploadsUrl, pass the arguments in the intended order, and verify that the affected migration commands still build and behave correctly.

Written by the indexing model from the issue text.