[gtk-osx] Update gtk-osx-docbook the 1.3.

[John Ralls <jralls src gnome org>]

commit dc55d5dc2a6b3ae0ecd81d058d9d48ab8a1aae90
Author: John Ralls <jralls ceridwen us>
Date:   Sat Aug 21 14:53:20 2021 -0700

    Update gtk-osx-docbook the 1.3.
    
    Only 3 years late.

 modulesets-stable/bootstrap.modules | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/modulesets-stable/bootstrap.modules b/modulesets-stable/bootstrap.modules
index 1eac9fc9..63caba6e 100644
--- a/modulesets-stable/bootstrap.modules
+++ b/modulesets-stable/bootstrap.modules
@@ -122,9 +122,9 @@
   -->
   <autotools id="gtk-osx-docbook" autogen-sh="configure"
              supports-non-srcdir-builds="no" >
-    <branch repo="sourceforge" module="gtk-osx/gtk-osx-docbook-1.2.tar.bz2"
-            version="1.2"
-            hash="sha256:40f0a97116b5abb7a38191b2720c15e690d3ffb1ab64883bba1f8a807b5e117e"/>
+    <branch repo="github" 
module="jralls/gtk-osx-docbook/releases/download/gtk-osx-docbook/gtk-osx-docbook-1.3.tar.bz2"
+            version="1.3"
+            hash="sha256:fcf497688a1d531b192301bd09c55adefda5a662729a58eb8a895166e38ef219"/>
   </autotools>
 
   <autotools id="intltool" autogen-sh="configure">