Display updated casks when running Already up-to-date.. Fixes #7011.

Library/Homebrew/cmd/update-report.rb

@@ -200,6 +200,10 @@ class Reporter
           # Have a dedicated report array for deleted casks.
           @report[:DC] << tap.formula_file_to_name(src)
         end
+        if status == "M"
+          # Report updated casks
+          @report[:MC] << tap.formula_file_to_name(src)
+        end
       end
 
       next unless paths.any? { |p| tap.formula_file?(p) }
@@ -422,6 +426,7 @@ class ReporterHub
     dump_formula_report :M, "Updated Formulae"
     dump_formula_report :R, "Renamed Formulae"
     dump_formula_report :D, "Deleted Formulae"
+    dump_formula_report :MC, "Updated Casks"
   end
 
   private