[rubygems/rubygems] unskip print_args and fake_man tests on Windows

https://github.com/rubygems/rubygems/commit/c8eeb0af9d

spec/bundler/commands/exec_spec.rb

@@ -403,8 +403,6 @@ RSpec.describe "bundle exec" do
     each_prefix.call("exec") do |exec|
       describe "when #{exec} is used" do
         before(:each) do
-          skip "https://github.com/rubygems/rubygems/issues/3351" if Gem.win_platform?
-
           install_gemfile <<-G
             source "https://gem.repo1"
             gem "myrack"
@@ -435,6 +433,7 @@ RSpec.describe "bundle exec" do
 
         it "shows executable's man page when the executable has a -" do
           FileUtils.mv(bundled_app("print_args"), bundled_app("docker-template"))
+          FileUtils.mv(bundled_app("print_args.bat"), bundled_app("docker-template.bat")) if Gem.win_platform?
           bundle "#{exec} docker-template build discourse --help"
           expect(out).to eq('args: ["build", "discourse", "--help"]')
         end

spec/bundler/support/helpers.rb

@@ -384,12 +384,11 @@ module Spec
     end
 
     def with_fake_man
-      skip "fake_man is not a Windows friendly binstub" if Gem.win_platform?
-
       FileUtils.mkdir_p(tmp("fake_man"))
-      File.open(tmp("fake_man/man"), "w", 0o755) do |f|
-        f.puts "#!/usr/bin/env ruby\nputs ARGV.inspect\n"
-      end
+      create_file(tmp("fake_man/man"), <<~SCRIPT)
+        #!/usr/bin/env ruby
+        puts ARGV.inspect
+      SCRIPT
       with_path_added(tmp("fake_man")) { yield }
     end