[newlib-cygwin] Add description of OpenConsole.exe support to 3.7.0 release note

https://sourceware.org/git/gitweb.cgi?p=3Dnewlib-cygwin.git;h=3Dfaa6e2da172=
c5f087144652e1146e0d62f1f5853

commit faa6e2da172c5f087144652e1146e0d62f1f5853
Author: Takashi Yano <[email protected]>
Date:   Sun Apr 19 13:40:46 2026 +0900

    Add description of OpenConsole.exe support to 3.7.0 release note

Diff:
---
 winsup/cygwin/release/3.7.0 | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/winsup/cygwin/release/3.7.0 b/winsup/cygwin/release/3.7.0
index 6dbe09554..bcc80cbfd 100644
--- a/winsup/cygwin/release/3.7.0
+++ b/winsup/cygwin/release/3.7.0
@@ -18,3 +18,6 @@ What's new:
   stdc_first_leading_zero*, stdc_first_trailing_one*, stdc_first_trailing_=
zero*,
   stdc_has_single_bit*, stdc_leading_ones*, stdc_leading_zeros*,
   stdc_trailing_ones*, stdc_trailing_zeros*.
+
+- Add support for OpenConsole.exe if available. This adds new features
+  and fixes against pseudo console based on legacy conhost.exe.