sonic-frameworks-sso: Add Conflicts: signon for EPEL compatibility

The EPEL signon package and sonic-frameworks-sso both install the same
D-Bus service file (/usr/share/dbus-1/services/com.google.code.AccountsSSO.SingleSignOn.service)
and /etc/signond.conf, causing a file conflict that prevents
sonic-frameworks-sso from being installed.

Adding Conflicts: signon tells dnf to remove the EPEL signon daemon
when installing sonic-frameworks-sso (with --allowerasing). The EPEL
signon-qt6 library package (libsignon-qt6.so.1) is NOT conflicted and
can still coexist, since it has a different soname from our .so.0.

EPEL packages signon-plugin-oauth2 and signon-kwallet-extension will
be removed as they require libsignon-*.so.1 from the signon daemon,
but nothing in SonicDE hard-requires them.

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

sonic-frameworks-sso/sonic-frameworks-sso.spec

@@ -13,7 +13,7 @@
 #Name:           signon
 Name:           sonic-frameworks-sso
 Version:        8.61.2
-Release:        5%{?dist}
+Release:        6%{?dist}
 Summary:        Accounts framework for Linux and POSIX based platforms
 
 License:        LGPL-2.1-only
@@ -35,6 +35,11 @@ Provides:       signond%{?_isa} = %{version}-%{release}
 Requires:       dbus
 
 Provides:       signon%{?_isa} = %{version}-%{release}
+# The EPEL signon package installs the same D-Bus service file and
+# /etc/signond.conf.  Our fork has different library sonames (.so.0
+# vs EPEL's .so.1), so signon-qt6 can still coexist, but the daemon
+# package itself cannot.
+Conflicts:      signon
 
 %description
 Single Sign-On is a framework for centrally storing authentication credentials
@@ -104,5 +109,8 @@ mkdir -p %{buildroot}%{_libdir}/signond/extensions/
 %{_libdir}/libsignon-plugins-common.so
 
 %changelog
+* Thu Aug 27 2026 SonicDE <dev@sonicde.org> - 8.61.2-6
+- Add Conflicts: signon to prevent D-Bus service file clash with EPEL signon
+
 * Mon Aug 24 2026 Anders da Silva Rytter Hansen <andersrh@users.noreply.github.com> - 8.61.2-1
 - SonicDE hard fork build for Enterprise Linux 10 and Fedora