(build) Update to newer Cake version

gep13 · gep13 · commit d3afcc0ce018 · 2018-08-08T08:44:21.000-05:00
diff --git a/tools/packages.config b/tools/packages.config
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-    <package id="Cake" version="0.25.0" />
+    <package id="Cake" version="0.28.1" />
 </packages>
