[gnome-build-meta] gtk-vnc: update submodule path

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 57022909552947b1e137e0a1c38254d353d659fa
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Tue Aug 6 10:53:47 2019 -0500

    gtk-vnc: update submodule path

 elements/core-deps/gtk-vnc.bst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/elements/core-deps/gtk-vnc.bst b/elements/core-deps/gtk-vnc.bst
index a8165059..ddc54e2e 100644
--- a/elements/core-deps/gtk-vnc.bst
+++ b/elements/core-deps/gtk-vnc.bst
@@ -4,7 +4,7 @@ sources:
   url: gitlab_gnome_org:GNOME/gtk-vnc.git
   track: master
   submodules:
-    src/keycodemapdb:
+    subprojects/keycodemapdb:
       checkout: true
       url: gitlab_com:keycodemap/keycodemapdb.git
 depends: