Fix argument of Thinreports::Report.generate in Ruby 3.0

[sada]

Summary

The sample code raised ArgumentError in Ruby 3.0.

Thinreports::Report.generate(filename: 'report.pdf', layout: 'report.tlf') do |report|
  report.start_new_page do |page|
    # :
  end
end

This PR changed argument of Thinreports::Report.generate.

Issue

https://github.com/thinreports/thinreports-generator/issues/115

[sada]

GitHub Actions failed. This failed test is other issue.

URL in the test is 404 page.

https://github.com/thinreports/thinreports-generator/blob/15657a3be091e5ccd8d3572cd52d76d43a2ad71e/test/features/image_block/test_feature.rb#L29

[hidakatsuya]

PRありがとうございます！

This failed test is other issue.

URL in the test is 404 page.

こちら、 https://github.com/thinreports/thinreports-generator/commit/38b3e5d34454d927c9c820c0590da626502abd9b でmaster を修正しましたので、すみませんが rebase をお願いします。

[sada]

@hidakatsuya 対応ありがとうございます。rebaseしました。

[hidakatsuya]

ご対応ありがとうごさいました！

[sada]

マージありがとうございます！