update vendor/ dir to latest w/o heroku, moby

had to lock a lot of things in place

vendor/github.com/gin-gonic/gin/path_test.go

@@ -1,7 +1,7 @@
 // Copyright 2013 Julien Schmidt. All rights reserved.
 // Based on the path package, Copyright 2009 The Go Authors.
 // Use of this source code is governed by a BSD-style license that can be found
-// in the LICENSE file.
+// at https://github.com/julienschmidt/httprouter/blob/master/LICENSE
 
 package gin