[gnome-dictionary] build: Bump up Meson dependency

[Emmanuele Bassi <ebassi src gnome org>]

commit 0c53cc4f73269e9d3005323b69509ace65c5c7f7
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Wed Aug 23 15:24:10 2017 +0100

    build: Bump up Meson dependency
    
    With a recent enough Meson we can reliably dist without an ancillary
    script.

 build-aux/make_release.sh |   23 -----------------------
 meson.build               |    2 +-
 2 files changed, 1 insertions(+), 24 deletions(-)
---
diff --git a/meson.build b/meson.build
index c6dab8c..91a0e3d 100644
--- a/meson.build
+++ b/meson.build
@@ -5,7 +5,7 @@ project('gnome-dictionary', 'c', version: '3.25.90',
           'warning_level=1',
         ],
         license: 'GPLv2+',
-        meson_version: '>= 0.39.1')
+        meson_version: '>= 0.42.0')
 
 # Paths for the pkg-config file
 gdict_prefix = get_option('prefix')