Update docs changelog (for PR #61160) (#61257)

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: Joe Clark <31087804+jc-clark@users.noreply.github.com>

Author: 3 people

CHANGELOG.md

@@ -6,6 +6,14 @@ We published the first iteration of a [journey landing page](https://docs.github
 
 <hr>
 
+**15 May 2026**
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+We've published a new [GitHub Secret Protection adoption journey landing page](https://docs.github.com/en/code-security/tutorials/secret-protection-adoption-path) for AppSec administrators. Our content audit found that while individual GHSP articles existed, there was no clear end-to-end path from evaluation to organization-wide rollout. 
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+The new page organizes existing content into a 5-phase adoption journey: assess secret risk, evaluate fit and cost, pilot with selected repositories, monitor metrics, and scale protection across your organization 🎉 
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+<hr>
+
 **12 May 2026**
 
 We have now published the GitHub Enterprise Server (GHES) 3.21 release candidate notes. You can read the full notes here: