[gtk-osx] Update gtk-doc to 1.27, doesn't require perl 5.20 so it builds on Macs (which have only 5.18).

[John Ralls <jralls src gnome org>]

commit ba95a9b28ad02d612e44d6f9a5a6945593730ecd
Author: John Ralls <jralls ceridwen us>
Date:   Sat Apr 28 16:39:04 2018 -0700

    Update gtk-doc to 1.27, doesn't require perl 5.20 so it builds on Macs (which have only 5.18).

 modulesets-stable/gtk-osx-bootstrap.modules |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/modulesets-stable/gtk-osx-bootstrap.modules b/modulesets-stable/gtk-osx-bootstrap.modules
index 6945e0e..f7e71ab 100644
--- a/modulesets-stable/gtk-osx-bootstrap.modules
+++ b/modulesets-stable/gtk-osx-bootstrap.modules
@@ -115,8 +115,8 @@
 
   <autotools id="gtk-doc" autogen-sh="configure"
              autogenargs="--with-xml-catalog=$JHBUILD_PREFIX/share/xml/catalog">
-    <branch version="1.25" module="gtk-doc/1.25/gtk-doc-1.25.tar.xz"
-            hash="sha256:1ea46ed400e6501f975acaafea31479cea8f32f911dca4dff036f59e6464fd42"/>
+    <branch version="1.27" module="gtk-doc/1.27/gtk-doc-1.27.tar.xz"
+            hash="sha256:e26bd3f7080c749b1cb66c46c6bf8239e2f320a949964fb9c6d56e1b0c6d9a6f"/>
     <dependencies>
       <dep package="libxml2"/>
       <dep package="itstool"/>