feat: add talk for CNCF Cloud Native Sophia-Antipolis 2025

[dirien]

Proposed changes

Unreleased product version (optional)

Related issues (optional)

[claude]

Review Summary

This PR adds a new talk entry to Engin Diri's community engineering profile. The change is clean and follows the existing format.

✅ Approved

The change looks good overall:

• ✅ Follows existing YAML structure and formatting
• ✅ Proper date format with timezone
• ✅ Event name and title are clear and descriptive
• ✅ URL appears valid and follows CNCF community event pattern

📝 Minor Observations

Date Accuracy (content/community/community-engineering/engin-diri.md:13):
The date shows 2025-11-25 (November 25, 2025), but the PR title mentions "2025". Please verify this is the correct date, as:

• Today is 2025-11-28 according to the system
• The date appears to be 3 days in the past

If the event has already occurred, this is fine. If this is a typo and should be a future date, please update accordingly.

Title Capitalization (content/community/community-engineering/engin-diri.md:11):
The title "Move Promotions Out of CI: Implementing GitOps Promotion Tools" uses Title Case. While this matches some existing entries, consider checking if sentence case would be more appropriate per the style guide. However, since this is likely the official event title, keeping it as provided by the event organizers is acceptable.

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No blocking issues found. Feel free to mention me (@claude) if you'd like additional reviews or fixes.

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