Add a release note (feature)

Git for Windows git-for-windows/git#4700, which
allows using 24-bit colors in terminal windows.

Signed-off-by: gitforwindowshelper[bot] <[email protected]>

Author: gitforwindowshelper[bot]

ReleaseNotes.md

@@ -53,6 +53,7 @@ Please also note that the 32-bit variant of Git for Windows is deprecated; Its l
 * Comes with [libfido2 v1.14.0](https://github.com/Yubico/libfido2/releases/tag/1.14.0).
 * Comes with the MSYS2 runtime (Git for Windows flavor) based on [Cygwin v3.4.10](https://inbox.sourceware.org/cygwin-announce/[email protected]/).
 * Comes with [Perl v5.38.2](http://search.cpan.org/dist/perl-5.38.2/pod/perldelta.pod).
+* Git for Windows https://github.com/git-for-windows/git/pull/4700, which allows using 24-bit colors in terminal windows.
 
 ### Bug Fixes