Merge pull request #8820 from reitermarkus/phinze-cask

Prevent tapping `phinze/cask`.

Library/Homebrew/tap.rb

@@ -235,7 +235,7 @@ class Tap
 
     if official? && DEPRECATED_OFFICIAL_TAPS.include?(repo)
       odie "#{name} was deprecated. This tap is now empty and all its contents were either deleted or migrated."
-    elsif user == "caskroom"
+    elsif user == "caskroom" || name == "phinze/cask"
       new_repo = repo == "cask" ? "cask" : "cask-#{repo}"
       odie "#{name} was moved. Tap homebrew/#{new_repo} instead."
     end