DAOS-18129 build: Tag 2.6.4 rc4 (#17024)

Tag fourth release candidate for 2.6.4

Signed-off-by: Phil Henderson <phillip.henderson@hpe.com>

Author: phender

TAG

@@ -1 +1 @@
-2.6.4-rc3
+2.6.4-rc4

debian/changelog

@@ -1,3 +1,9 @@
+daos (2.6.4-6) unstable; urgency=medium
+  [ Phillip Henderson ]
+  * Fourth release candidate for 2.6.4
+
+ -- Phillip Henderson <phillip.henderson@hpe.com>  Thu, 23 Oct 2025 16:23:00 -0500
+
 daos (2.6.4-4) unstable; urgency=medium
   [ Phillip Henderson ]
   * Third release candidate for 2.6.4

utils/rpms/daos.spec

@@ -23,7 +23,7 @@
 
 Name:          daos
 Version:       2.6.4
-Release:       4%{?relval}%{?dist}
+Release:       6%{?relval}%{?dist}
 Summary:       DAOS Storage Engine
 
 License:       BSD-2-Clause-Patent
@@ -633,6 +633,9 @@ getent passwd daos_agent >/dev/null || useradd -s /sbin/nologin -r -g daos_agent
 # No files in a shim package
 
 %changelog
+* Thu Oct 23 2025 Phillip Henderson <phillip.henderson@hpe.com> 2.6.4-6
+- Fourth release candidate for 2.6.4
+
 * Tue Oct 21 2025 Ryon Jensen <ryon.jensen@hpe.com> 2.6.4-5
 - Bump libfabric version >= 1.22.0-4
 - Bump mercury version >= 2.4.0-7