Update to uses: slackapi/slack-github-action@v2.1.1

[glenn-jocher]

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Bumps Slack notification action in the iOS app CI workflow to a newer version for more reliable build/release alerts. 🔔

📊 Key Changes

• Updated GitHub Action slackapi/slack-github-action from v2.0.0 to v2.1.1 in the publish workflow.
• Applies to both “Notify Success” and “Notify Failure” steps in .github/workflows/publish.yml.

🎯 Purpose & Impact

• Improves reliability and compatibility of Slack notifications for CI builds and TestFlight releases. ✅
• Gains upstream fixes and minor enhancements from the newer action version with no app code changes. 🛠️
• Zero impact on the YOLO iOS app runtime—CI/CD improvement only. 🚀
• Reduces maintenance risk by keeping third-party GitHub Actions up to date. 🔒

[UltralyticsAssistant]

👋 Hello @glenn-jocher, thank you for submitting a ultralytics/yolo-ios-app 🚀 PR! This is an automated review to help streamline the process—an engineer will assist shortly. Please review the checklist below:

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[UltralyticsAssistant]

🔍 PR Review

_{Made with ❤️ by Ultralytics Actions}

Thanks for the update—looks good to bump the Slack GitHub Action to v2.1.1.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

📢 Thoughts on this report? Let us know!