[polari] build: Bump meson requirement

[Florian Müllner <fmuellner src gnome org>]

commit 9b7c3cbf5bb923b5a76f5abd6d61a47834ea5608
Author: Florian Müllner <fmuellner gnome org>
Date:   Thu Mar 5 15:11:42 2020 +0100

    build: Bump meson requirement
    
    While we aren't using any newer features (yet), building with ancient
    versions is completely untested.
    
    Bump the requirement to the version shipped in the 3.34 GNOME SDK, which
    should be established enough at this point.
    
    https://gitlab.gnome.org/GNOME/polari/-/merge_requests/148

 meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson.build b/meson.build
index 9b35802..10c2b47 100644
--- a/meson.build
+++ b/meson.build
@@ -1,6 +1,6 @@
 project('polari', 'c',
   version: '3.35.92',
-  meson_version: '>= 0.43.0',
+  meson_version: '>= 0.51.0',
   license: 'GPL2+'
 )