chore: update CODEOWNERS to visual-preview-developers

[hitesh-shetty-cstk]

Summary

Updates CODEOWNERS to make @contentstack/visual-preview-developers the owning team.

Changes

• Removed @contentstack/ghost-pr-reviewers from the * owner line; @contentstack/visual-preview-developers remains. Security-admin entries are unchanged.

Test plan

• CODEOWNERS syntax unchanged apart from removing one team; review requests will go to visual-preview-developers only once merged.

---

🤖 Generated with Claude Code

[github-actions]

🔒 Security Scan Results

ℹ️ Note: Only vulnerabilities with available fixes (upgrades or patches) are counted toward thresholds.

Check Type	Count (with fixes)	Without fixes	Threshold	Result
🔴 Critical Severity	0	0	10	✅ Passed
🟠 High Severity	0	0	25	✅ Passed
🟡 Medium Severity	0	0	500	✅ Passed
🔵 Low Severity	0	0	1000	✅ Passed

⏱️ SLA Breach Summary

✅ No SLA breaches detected. All vulnerabilities are within acceptable time thresholds.

Severity	Breaches (with fixes)	Breaches (no fixes)	SLA Threshold (with/no fixes)	Status
🔴 Critical	0	0	15 / 30 days	✅ Passed
🟠 High	0	0	30 / 120 days	✅ Passed
🟡 Medium	0	0	90 / 365 days	✅ Passed
🔵 Low	0	0	180 / 365 days	✅ Passed

✅ BUILD PASSED - All security checks passed

[karancs06]

LGTM // approved in Slack with WorkerB

[github-actions]

Coverage Report

Status	Category	Percentage	Covered / Total
🔵	Lines	67.11%	2508 / 3737
🔵	Statements	65.99%	2548 / 3861
🔵	Functions	64.51%	449 / 696
🔵	Branches	61.4%	1513 / 2464

File Coverage

No changed files found.

Generated in workflow #862 for commit 6d13873 by the Vitest Coverage Report Action

[SahilCs15]

LGTM