convert GPLv2 license to SPDX

This is part of https://fedoraproject.org/wiki/Changes/SPDX_Licenses_Phase_4

setconf.spec

@@ -1,9 +1,10 @@
 Name:           setconf
 Version:        0.7.7 
-Release:        15%{?dist}
+Release:        16%{?dist}
 Summary:        Utility for changing settings in configuration text files 
 
-License:        GPLv2
+# Automatically converted from old format: GPLv2 - review is highly recommended.
+License:        GPL-2.0-only
 URL:            http://setconf.roboticoverlords.org/ 
 Source0:        https://github.com/xyproto/%{name}/archive/%{version}/%{name}-%{version}.tar.gz
 
@@ -45,6 +46,9 @@ cd testcases/ && ./py3_test.sh
 %{_bindir}/%{name}
 
 %changelog
+* Mon Jul 29 2024 Miroslav Suchý <msuchy@redhat.com> - 0.7.7-16
+- convert license to SPDX
+
 * Sat Jul 20 2024 Fedora Release Engineering <releng@fedoraproject.org> - 0.7.7-15
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild