ci: use a github app for token generation

[Saadnajmi]

Platforms Impacted

• iOS
• macOS
• win32 (Office)
• windows
• android

Description of changes

Got access to the github app, let's use a token

Verification

🤷

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Pull request checklist

This PR has considered (when applicable):

• Automated Tests
• Documentation and examples
• Keyboard Accessibility
• Voiceover
• Internationalization and Right-to-left Layouts

[changeset-bot]

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Latest commit: 225aa83

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