[FEAT]: Replace `team_id` with `team_slug`

### Describe the need

The REST APIs for interacting with team by ID are currently under a closing down notice ([ref](https://docs.github.com/en/rest/teams/teams?apiVersion=2022-11-28#get-a-team-legacy)) so we should switch to using `team_slug`. Although #2421 is currently still relevant and correct this would change this position with the eventual removal of the `team_id`.

This change should be able to be completed with minimal end user pain as we can add `team_slug` alongside `team_id`. I'm planning on opening a PR to achieve this once #2476 has been merged. I'm waiting for this so there can be automated acceptance tests in place.

### SDK Version

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### API Version

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### Relevant log output

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### Code of Conduct

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