[devhelp] build: bump WebKitGTK+ dependency to stable version

[Sébastien Wilmet <swilmet src gnome org>]

commit fde8ce18b892e8218d7773724d410a4ef301fa7d
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Fri Mar 23 12:13:17 2018 +0100

    build: bump WebKitGTK+ dependency to stable version

 meson.build |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/meson.build b/meson.build
index 1eaf23e..606fc44 100644
--- a/meson.build
+++ b/meson.build
@@ -34,7 +34,7 @@ LIBDEVHELP_LT_VERSION='@0@.@1@.@2@'.format(lt_current, lt_revision, lt_age)
 libdevhelp_deps_array = [
         ['gio-2.0', '>= 2.40'],
         ['gtk+-3.0', '>= 3.22'],
-        ['webkit2gtk-4.0', '>= 2.19.2']
+        ['webkit2gtk-4.0', '>= 2.20']
 ]
 
 LIBDEVHELP_DEPS_STR = []