`GetDefaultCodeSecurityConfigurations` returns `[]*CodeSecurityConfiguration` but should return `[]*CodeSecurityConfigurationWithDefaultForNewRepos`

[ericmort]

The return type of GetDefaultCodeSecurityConfigurations should return []*CodeSecurityConfigurationWithDefaultForNewRepos to align with the API response schema: https://docs.github.com/en/rest/code-security/configurations?apiVersion=2022-11-28#get-default-code-security-configurations

I can create a PR for this if you agree with the problem, this would also be a breaking change I guess.

[gmlewis]

Thank you, @ericmort! It's yours.