convert GPLv2+ license to SPDX

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

wxapt.spec

@@ -1,9 +1,10 @@
 Name:           wxapt
 Version:        1.7.1
-Release:        13%{?dist}
+Release:        14%{?dist}
 Summary:        Console application for decoding and saving weather images
 
-License:        GPLv2+
+# Automatically converted from old format: GPLv2+ - review is highly recommended.
+License:        GPL-2.0-or-later
 URL:            http://www.5b4az.org/
 Source0:        http://www.5b4az.org/pkg/apt/wxapt/%{name}-%{version}.tar.bz2
 
@@ -41,6 +42,9 @@ install -pm 0755 src/%{name} %{buildroot}%{_bindir}/
 
 
 %changelog
+* Fri Jul 26 2024 Miroslav Suchý <msuchy@redhat.com> - 1.7.1-14
+- convert license to SPDX
+
 * Sat Jul 20 2024 Fedora Release Engineering <releng@fedoraproject.org> - 1.7.1-13
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild