[stzn/the-swift-programming-language-jp] Issue opened: #587 Swift 6の日付更新

[stzn/the-swift-programming-language-jp] Pull request opened: #588 Swift 6の正式リリースに日付を更新

[stzn/the-swift-programming-language-jp] Pull request closed: #588 Swift 6の正式リリースに日付を更新

[stzn/the-swift-programming-language-jp] Issue closed: #587 Swift 6の日付更新