Ignore zap trash stanzas with interpolation

- Interpolating the version into a path is a common pattern, but the interpolations
  trip up the alphabetization autocorrect quite spectacularly, so let's
  ignore them (for now?).

Library/Homebrew/rubocops/cask/array_alphabetization.rb

@@ -18,7 +18,7 @@ module RuboCop
                 end
               end
 
-              array.each_descendant(:str).each_cons(2) do |first, second|
+              array.children.reject(&:dstr_type?).each_cons(2) do |first, second|
                 next if first.source.downcase < second.source.downcase
 
                 add_offense(second, message: "The `zap trash` paths should be in alphabetical order") do |corrector|

Library/Homebrew/test/rubocops/cask/array_alphabetization_spec.rb

@@ -56,4 +56,17 @@ describe RuboCop::Cop::Cask::ArrayAlphabetization, :config do
       end
     CASK
   end
+
+  it "ignores zap trash paths that have interpolation" do
+    expect_no_offenses(<<~CASK)
+      cask "foo" do
+        url "https://example.com/foo.zip"
+
+        zap trash: [
+          "~/Library/Application Support/Foo",
+          "~/Library/Application Support/Bar\#{version.major}",
+        ]
+      end
+    CASK
+  end
 end