[sysprof] build: bump C++ requirement

[Christian Hergert <chergert src gnome org>]

commit 94ce3dd648c4148baaa2dbdf1e6222c7c9fa6787
Author: Christian Hergert <chergert redhat com>
Date:   Tue May 7 22:58:37 2019 -0700

    build: bump C++ requirement

 meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson.build b/meson.build
index 08eaf97..4be9075 100644
--- a/meson.build
+++ b/meson.build
@@ -3,7 +3,7 @@ project('sysprof', ['c', 'cpp'],
         version: '3.33.1',
   meson_version: '>=0.49.0',
   default_options: [ 'c_std=gnu11',
-                     'cpp_std=c++03',
+                     'cpp_std=c++11',
                      'warning_level=2',
   ]
 )