[shotwell] flatpak: Update libchamplain

[Jens Georg <jensgeorg src gnome org>]

commit 2bf4950b1e9c7d6cf14d6f22afe0e822ff79727b
Author: Jens Georg <mail jensge org>
Date:   Sat Oct 12 11:11:57 2019 +0200

    flatpak: Update libchamplain

 flatpak/org.gnome.Shotwell.json | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)
---
diff --git a/flatpak/org.gnome.Shotwell.json b/flatpak/org.gnome.Shotwell.json
index 9de3371d..efba802e 100644
--- a/flatpak/org.gnome.Shotwell.json
+++ b/flatpak/org.gnome.Shotwell.json
@@ -214,14 +214,17 @@
         },
         {
             "name" : "libchamplain",
+            "buildsystem" : "meson",
             "config-opts" : [
-                "--enable-vala"
+                "-Dvapi=true",
+                "-Dintrospection=true",
+                "-Dwidgetry=true"
             ],
             "sources" : [
                 {
                     "type" : "git",
-                    "tag" : "LIBCHAMPLAIN_0_12_18",
-                    "commit" : "3abc28430124256660a7321da1fa6571f2975ad7",
+                    "tag" : "LIBCHAMPLAIN_0_12_19",
+                    "commit" : "37493068c81f28773a910ab3a781fe83fd8fb6f3",
                     "url" : "https://gitlab.gnome.org/GNOME/libchamplain.git";
                 }
             ]