[gnome-build-meta/gnome-3-30] core-deps/tracker.bst: Update to 2.1.6

[Jordan Petridis <jpetridis src gnome org>]

commit 01f31787cd90105d968f830e237c181e575d8c78
Author: Jordan Petridis <jpetridis gnome org>
Date:   Wed Nov 7 14:11:41 2018 +0200

    core-deps/tracker.bst: Update to 2.1.6
    
    The issue preventing as from using tarballs,
    in b272aa5c4122da77f9ee2f2c0ab7210668d254cc has been fixed.
    
    https://gitlab.gnome.org/GNOME/tracker/issues/41

 elements/core-deps/tracker.bst | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)
---
diff --git a/elements/core-deps/tracker.bst b/elements/core-deps/tracker.bst
index 531ae8a..3a46ab8 100644
--- a/elements/core-deps/tracker.bst
+++ b/elements/core-deps/tracker.bst
@@ -1,9 +1,8 @@
 kind: meson
 sources:
-- kind: git
-  url: https://gitlab.gnome.org/GNOME/tracker.git
-  track: 2.1.5
-  ref: ccf6034b223b1e5a57bd5791006e08d107b02dc2
+- kind: tar
+  url: https://download.gnome.org/sources/tracker/2.1/tracker-2.1.6.tar.xz
+  ref: 982bd0abe62a2a7e72c7f7efb7935dd33e1860265e3c7ceb90ef5150f0557f90
 depends:
 - core-deps/NetworkManager.bst
 - core-deps/upower.bst