[3.12] gh-112953: Update news to finish 3.13 as main (GH-129877) (#129879)

Entry for patch to 3.13.rc3
(cherry picked from commit f72977b)

Co-authored-by: Terry Jan Reedy <[email protected]>

Author: miss-islington

Lib/idlelib/News3.txt

@@ -4,6 +4,8 @@ Released after 2023-10-02
 =========================
 
 
+gh-120104: Fix padding in config and search dialog windows in IDLE.
+
 gh-120083: Add explicit black IDLE Hovertip foreground color needed for
 recent macOS. Fixes Sonoma showing unreadable white on pale yellow.
 Patch by John Riggles.