[gnome-software] build: Bump GLib version requirement to 2.55

[Richard Hughes <rhughes src gnome org>]

commit 825b00e8eade615439059627f960faf3b5a3125e
Author: Philip Withnall <withnall endlessm com>
Date:   Fri May 17 18:03:34 2019 +0100

    build: Bump GLib version requirement to 2.55
    
    We already depended on it due to using g_autolist() in the flatpak
    plugin.
    
    Signed-off-by: Philip Withnall <withnall endlessm com>

 meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson.build b/meson.build
index 8f36aa99..ac137e81 100644
--- a/meson.build
+++ b/meson.build
@@ -103,7 +103,7 @@ gio_unix = dependency('gio-unix-2.0', version : '>= 2.56.0')
 gmodule = dependency('gmodule-2.0')
 goa = dependency('goa-1.0')
 gtk = dependency('gtk+-3.0', version : '>= 3.22.4')
-glib = dependency('glib-2.0')
+glib = dependency('glib-2.0', version : '>= 2.55.0')
 json_glib = dependency('json-glib-1.0', version : '>= 1.2.0')
 libm = cc.find_library('m', required: false)
 libsoup = dependency('libsoup-2.4', version : '>= 2.52.0')