[gnome-builder/1074-vala-language-server-add-support-using-gvls] Meson: set back required version to 0.51.2

[Daniel Espinosa Ortiz <despinosa src gnome org>]

commit 6afcbcf2190c9bd5c7b96a84ca2db6625bcee41d
Author: Daniel Espinosa Ortiz <esodan gmail com>
Date:   Thu Nov 21 17:45:13 2019 -0600

    Meson: set back required version to 0.51.2

 meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson.build b/meson.build
index f80d29f26..7cb6c164e 100644
--- a/meson.build
+++ b/meson.build
@@ -1,7 +1,7 @@
 project('gnome-builder', 'c',
           license: 'GPL3+',
           version: '3.35.0',
-    meson_version: '>= 0.52.0',
+    meson_version: '>= 0.51.2',
   default_options: [ 'c_std=gnu11',
                      'cpp_std=gnu++2a',
                      'warning_level=2',