convert GPLv2+ license to SPDX

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

vid.stab.spec

@@ -6,9 +6,10 @@
 
 Name:           vid.stab
 Version:        1.1.1
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Video stabilize library for fmpeg, mlt or transcode
-License:        GPLv2+
+# Automatically converted from old format: GPLv2+ - review is highly recommended.
+License:        GPL-2.0-or-later
 URL:            http://public.hronopik.de/vid.stab
 Source0:        https://github.com/georgmartius/vid.stab/archive/%{commit}/%{name}-%{shortcommit}.tar.gz
 
@@ -70,6 +71,9 @@ LD_LIBRARY_PATH=%{buildroot}%{_libdir} tests/tests || :
 %{_libdir}/pkgconfig/vidstab.pc
 
 %changelog
+* Fri Jul 26 2024 Miroslav Suchý <msuchy@redhat.com> - 1.1.1-4
+- convert license to SPDX
+
 * Sat Jul 20 2024 Fedora Release Engineering <releng@fedoraproject.org> - 1.1.1-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild