gh-139400: Move NEWS item from section "Core and Builtins" to section "Security"...

diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2025-09-29-00-01-28.gh-issue-139400.X2T-jO.rst b/Misc/NEWS.d/next/Security/2025-09-29-00-01-28.gh-issue-139400.X2T-jO.rst
similarity index 100%
rename from Misc/NEWS.d/next/Core_and_Builtins/2025-09-29-00-01-28.gh-issue-139400.X2T-jO.rst
rename to Misc/NEWS.d/next/Security/2025-09-29-00-01-28.gh-issue-139400.X2T-jO.rst