Fix "Hash.new with kwargs" error in Ruby 3.4

[amatsuda]

Description

Calling Hash.new with keyword arguments has been removed in Ruby 3.4, and it's warned to "use Hash.new({ key: value }) instead" in Ruby 3.3.
Please see https://bugs.ruby-lang.org/issues/19236 for more details about this change.

So here's a patch that fixes the warning and error below:

Ruby 3.3

warning: Calling Hash.new with keyword arguments is deprecated and will be removed in Ruby 3.4; use Hash.new({ key: value }) instead

Ruby 3.4

unknown keywords: :strict, :proc (ArgumentError)

Type of change

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• New and existing tests are passing locally and on CI
• bundle exec rubocop reports no offenses
• CHANGELOG.md has been updated

[olleolleolle]

Thank you @amatsuda! Oh, wait #1757 does a different tack - perhaps this is a duplicate effort.

[amatsuda]

Oh, indeed. I'm sorry for the noise!