Revert to use admin token for semantic release action

[KIRA009]

What kind of change does this PR introduce? This reverts a change that was made earlier, to use the secrets.ADMIN_TOKEN for the semantic release action

Summary The secrets.GITHUB_TOKEN doesn't have the right privileges to push to the main branch, but the secrets.ADMIN_TOKEN does. This MR addresses that.

https://github.com/OpenAdaptAI/OpenAdapt/actions/runs/8910687505/job/24470804634 - semantic release action failed because of wrong token

Checklist

• [x] My code follows the style guidelines of OpenAdapt
• [x] I have performed a self-review of my code
• [ ] If applicable, I have added tests to prove my fix is functional/effective
• [x] I have linted my code locally prior to submission
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation (e.g. README.md, requirements.txt)
• [x] New and existing unit tests pass locally with my changes