[libgfbgraph] Update issue tracker URL from Bugzilla to Gitlab

[Andre Klapper <aklapper src gnome org>]

commit f22e9902b5992e0b46c27fb4c11c82e10d3e56cc
Author: Andre Klapper <a9016009 gmx de>
Date:   Sun Mar 14 08:26:35 2021 +0100

    Update issue tracker URL from Bugzilla to Gitlab

 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/configure.ac b/configure.ac
index 58d55eb..787db29 100644
--- a/configure.ac
+++ b/configure.ac
@@ -6,7 +6,7 @@ m4_define([gfbgraph_version], [api_major.api_minor.api_micro])
 
 AC_PREREQ([2.63])
 AC_INIT([gfbgraph], [gfbgraph_version],
-        [https://bugzilla.gnome.org/enter_bug.cgi?product=gfbgraph],
+        [https://gitlab.gnome.org/GNOME/libgfbgraph/-/issues/new],
         [gfbgraph],
         [https://github.com/alvaropg/libgfbgraph.git])