[newlib-cygwin/cygwin-3_6-branch] Update release note 3.6.10

https://sourceware.org/git/gitweb.cgi?p=3Dnewlib-cygwin.git;h=3Db11613e477c=
006b2ce0332463ed07f1118260e79

commit b11613e477c006b2ce0332463ed07f1118260e79
Author: Takashi Yano <[email protected]>
Date:   Thu Jul 9 21:30:35 2026 +0900

    Update release note 3.6.10

Diff:
---
 winsup/cygwin/release/3.6.10 | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/winsup/cygwin/release/3.6.10 b/winsup/cygwin/release/3.6.10
index 3f4b25abf..825ed3a62 100644
--- a/winsup/cygwin/release/3.6.10
+++ b/winsup/cygwin/release/3.6.10
@@ -24,3 +24,9 @@ Fixes:
 - Fix NOFLSH behaviour in console a bit.
=20
 - Fix typeahead input in console for bash.
+
+- Fix a pty race issue at startup of cygwin and non-cygwin processes
+  where the different pipe mode (nat or cyg) is required.
+
+- Fix non-cygwin inferior crash in gdb when it is launched repeatedly
+  in a pty.