Bump jgit-describe version.

Change-Id: Ibb938568e3e54ae0b82add4d704889edaa1d0964
Reviewed-on: http://gerrit.dmdirc.com/3429
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>

ivy.xml

@@ -10,7 +10,7 @@
     <dependencies>
         <!-- Build - Common -->
         <dependency org="ant-contrib" name="ant-contrib" rev="1.0b3" conf="build->default" />
-        <dependency org="com.github.shanemcc" name="jgit-describe" rev="0.3" conf="build->default" />
+        <dependency org="com.github.shanemcc" name="jgit-describe" rev="0.4" conf="build->default" />
 
         <!-- Main - Common -->
         <dependency org="com.squareup.dagger" name="dagger" rev="1.2.1" conf="main->default" />