Add aarch64-mingw-ucrt

Need to release it to test plugins on Windows 11 on ARM

Signed-off-by: Takuro Ashie <ashie@clear-code.com>

Author: ashie

Rakefile

@@ -17,7 +17,7 @@ namespace :build do
   desc 'Build gems for all platforms'
   task :all do
     Bundler.with_original_env do
-      %w[ruby x86-mingw32 x64-mingw32 x64-mingw-ucrt].each do |name|
+      %w[ruby x86-mingw32 x64-mingw32 x64-mingw-ucrt aarch64-mingw-ucrt].each do |name|
         ENV['GEM_BUILD_FAKE_PLATFORM'] = name
         Rake::Task["build"].execute
       end