OWNERS: Update Andrew's email address

I prefer my codeconstruct.com.au address now for contributions to
OpenBMC.

Change-Id: I64cdaaaa88a907a3c466e6c9b349eec62879fb2f
Signed-off-by: Andrew Jeffery <andrew@codeconstruct.com.au>
diff --git a/OWNERS b/OWNERS
index 1bfd3d1..fc9bdd4 100644
--- a/OWNERS
+++ b/OWNERS
@@ -32,7 +32,7 @@
 # data within them will be kept sorted.
 
 owners:
-- andrew@aj.id.au
+- andrew@codeconstruct.com.au
 
 reviewers:
 - manojkiran.eda@gmail.com