[gnome-build-meta] elements/core-deps/libgdata.bst: Use tarball instead ref:

[Javier Jardón Cabezas <jjardon src gnome org>]

commit 4ad219f863ba1b45e4306f772ac41785d5ed0b02
Author: Javier Jardón <jjardon gnome org>
Date:   Wed Jul 31 17:07:08 2019 +0100

    elements/core-deps/libgdata.bst: Use tarball instead ref:
    
    ref: will be overwritten after running bst track on the CI

 elements/core-deps/libgdata.bst | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)
---
diff --git a/elements/core-deps/libgdata.bst b/elements/core-deps/libgdata.bst
index 0de7d7b5..8e374ea9 100644
--- a/elements/core-deps/libgdata.bst
+++ b/elements/core-deps/libgdata.bst
@@ -1,9 +1,7 @@
 kind: meson
 sources:
-- kind: git_tag
-  url: gitlab_gnome_org:GNOME/libgdata.git
-  ref: 0.17.10-0-gf54d68f961015f85595b956ff0143a6ee0c41ff7
-  track: master
+- kind: tar
+  url: gnome_downloads:libgdata/0.17/libgdata-0.17.10.tar.xz
 depends:
 - core-deps/gnome-online-accounts.bst
 - core-deps/liboauth.bst