[newlib-cygwin] Cygwin: Add release note for recent pty related fixes

[Takashi Yano]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=ede095ca4ff4c9d2640dd85187d51b86b8cb4c65

commit ede095ca4ff4c9d2640dd85187d51b86b8cb4c65
Author: Takashi Yano <takashi.yano@nifty.ne.jp>
Date:   Fri Dec 19 22:35:41 2025 +0900

    Cygwin: Add release note for recent pty related fixes
    
    Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>

Diff:
---
 winsup/cygwin/release/3.6.6 | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/winsup/cygwin/release/3.6.6 b/winsup/cygwin/release/3.6.6
index 194ff15d0..bc778ba46 100644
--- a/winsup/cygwin/release/3.6.6
+++ b/winsup/cygwin/release/3.6.6
@@ -17,3 +17,10 @@ Fixes:
 
 - Improve newgrp(1) POSIX compatibility and its documentation.
   Addresses: https://cygwin.com/pipermail/cygwin/2025-December/259055.html
+
+- Fix ESC sequence parsing in pty_master_fwd_thread.
+
+- Add a new workaround which prevent the screen from being garbled when
+  cmd.exe is started using rlwrap in Win11.
+
+- Fix a bug where app execution aliases no longer start correctly.