[nautilus] general: Use proper license identifiers

[António Fernandes <antoniof src gnome org>]

commit 8bea51e173c39b02b6049071da131a70ea26def0
Author: Maximiliano <msandova gnome org>
Date:   Mon Feb 28 18:42:00 2022 +0000

    general: Use proper license identifiers
    
    GPL3+ is a deprecated SPDX identifier.[0] The meson and about dialog say
    GPL 3.0, so that should also appear on the appdata.
    
    [0] https://spdx.org/licenses/

 data/org.gnome.Nautilus.appdata.xml.in.in | 2 +-
 meson.build                               | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/data/org.gnome.Nautilus.appdata.xml.in.in b/data/org.gnome.Nautilus.appdata.xml.in.in
index 6c4ed81ee..0c68a4f0a 100644
--- a/data/org.gnome.Nautilus.appdata.xml.in.in
+++ b/data/org.gnome.Nautilus.appdata.xml.in.in
@@ -30,7 +30,7 @@
     <release version="42.alpha" date="2022-01-09" />
   </releases>
   <project_group>GNOME</project_group>
-  <project_license>GPL-2.0+</project_license>
+  <project_license>GPL-3.0-or-later</project_license>
   <developer_name>The GNOME Project</developer_name>
   <screenshots>
     <screenshot type="default">
diff --git a/meson.build b/meson.build
index 680d9715c..f8973e020 100644
--- a/meson.build
+++ b/meson.build
@@ -7,7 +7,7 @@ project('nautilus', 'c',
   version: '43.alpha',
 
   meson_version: '>= 0.49.0',
-  license: 'GPL3+'
+  license: 'GPL-3.0-or-later'
 )
 
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