!18 update the release to 3

From: @yaowenbin1 
Reviewed-by: @SuperSix173 
Signed-off-by: @SuperSix173

npth.spec

@@ -1,6 +1,6 @@
 Name:           npth
 Version:        1.6
-Release:        2
+Release:        3
 Summary:        The New GNU Portable Threads library
 License:        LGPLv2+
 URL:            http://git.gnupg.org/cgi-bin/gitweb.cgi?p=npth.git
@@ -57,6 +57,9 @@ make check
 %{_datadir}/aclocal/%{name}.m4
 
 %changelog
+* Tue Oct 25 2022 yaowenbin <yaowenbin1@huawei.com> - 1.6-3
+- Update the release to 3
+
 * Mon Sep 28 2020 EulerOSWander <314264452@qq.com> - 1.6-2
 - Use cast by uintptr_t for thread ID.