[gnome-font-viewer] build: Fix version number

[Christopher Davis <christopherdavis src gnome org>]

commit e8866f035986ae29b2033bc583121c0b61c20984
Author: Christopher Davis <christopherdavis gnome org>
Date:   Fri Sep 2 12:13:23 2022 -0400

    build: Fix version number
    
    I was too hasty in switching to 43.0

 meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson.build b/meson.build
index 5102a37..a0a88f0 100644
--- a/meson.build
+++ b/meson.build
@@ -1,5 +1,5 @@
 project('gnome-font-viewer', 'c',
-        version: '43.0',
+        version: '43.rc',
         license: 'GPLv2+',
         meson_version: '>= 0.50.0',
 )