cmd/upgrade, reinstall: don't install on dry-run.

Fixes #7033.

Library/Homebrew/cmd/upgrade.rb

@@ -326,6 +326,8 @@ module Homebrew
                                           .join(", ")
     end
 
+    return if args.dry_run?
+
     reinstallable_broken_dependents.each do |f|
       reinstall_formula(f, build_from_source: true)
     rescue FormulaInstallationAlreadyAttemptedError

Library/Homebrew/reinstall.rb

@@ -8,6 +8,8 @@ module Homebrew
   module_function
 
   def reinstall_formula(f, build_from_source: false)
+    return if args.dry_run?
+
     if f.opt_prefix.directory?
       keg = Keg.new(f.opt_prefix.resolved_path)
       tab = Tab.for_keg(keg)