[jhbuild] sysdeps-latest: Add python3 module

[Ting-Wei Lan <lantw src gnome org>]

commit 15ecfacd91f0104a5ac01967e8806aebb2dca8f2
Author: Ting-Wei Lan <lantw src gnome org>
Date:   Sun Aug 30 23:26:23 2020 +0800

    sysdeps-latest: Add python3 module
    
    JHBuild shows an warning every time you use it to build itself.
    
    W: jhbuild has a dependency on unknown "python3" module

 modulesets/gnome-sysdeps-latest.modules | 7 +++++++
 1 file changed, 7 insertions(+)
---
diff --git a/modulesets/gnome-sysdeps-latest.modules b/modulesets/gnome-sysdeps-latest.modules
index eceb6119..66870db8 100644
--- a/modulesets/gnome-sysdeps-latest.modules
+++ b/modulesets/gnome-sysdeps-latest.modules
@@ -1121,6 +1121,13 @@
             version="2.7"/>
   </systemmodule>
 
+  <systemmodule id="python3">
+    <branch repo="system"/>
+    <systemdependencies>
+      <dep type="path" name="python3"/>
+    </systemdependencies>
+  </systemmodule>
+
   <systemmodule id="python3-devel">
     <pkg-config>python3.pc</pkg-config>
     <branch repo="system"