* Merge RubyGems-3.4.7 and Bundler-2.4.7

* Merge RubyGems-3.4.8 and Bundler-2.4.8

* Skip failing test on MSWin

* Merge RubyGems-3.4.9 and Bundler-2.4.9

* Merge RubyGems-3.4.10 and Bundler-2.4.10

---------

Co-authored-by: Nobuyoshi Nakada <nobu@ruby-lang.org>

Signed-off-by: Takuya Noguchi <takninnovationresearch@gmail.com>

Since it only uses `flock` on Windows.

https://github.com/rubygems/rubygems/commit/b877de4d9c

https://github.com/rubygems/rubygems/commit/f7f504b24c

On JRuby, sometimes we get the following error in CI when running a
realworld test that checks that `gem install rails` succeeds:

```
ERROR:  While executing gem ... (NoMethodError)
    undefined method `ignored=' for nil:NilClass
	/home/runner/.rubies/jruby-9.3.2.0/lib/ruby/stdlib/rubygems/stub_specification.rb:193:in `to_spec'
	org/jruby/RubyArray.java:2642:in `map'
	/home/runner/.rubies/jruby-9.3.2.0/lib/ruby/stdlib/rubygems/specification.rb:758:in `_all'
	/home/runner/.rubies/jruby-9.3.2.0/lib/ruby/stdlib/rubygems/specification.rb:956:in `each'
	org/jruby/RubyEnumerable.java:1710:in `any?'
	/home/runner/.rubies/jruby-9.3.2.0/lib/ruby/stdlib/rubygems/resolver/activation_request.rb:111:in `installed?'
	/home/runner/.rubies/jruby-9.3.2.0/lib/ruby/stdlib/rubygems/request_set.rb:173:in `block in install'
```

I'm not sure how this error is happening, but I think there's no need to
copy the `@ignored` instance variable when materializing stub
specifications. This instance variable is used to not print a warning
about missing extensions more than once for each gem upon gem
activation, but as far as I can see, it's only used by methods that work
on specification stubs. Once specifications are materialized, I think
it can be safely ignored.

https://github.com/rubygems/rubygems/commit/301cecd5a7