point dependencies to 'release' branches

Change-Id: I0e26b6a8749848b1ed52d99ea0be8566527ecb15
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

sync.profile

@@ -11,6 +11,6 @@
 #   - any git symbolic ref resolvable from the module's repository (e.g. "refs/heads/master" to track master branch)
 #
 %dependencies = (
-    "qtbase" => "refs/heads/stable",
+    "qtbase" => "refs/heads/release",
 );