Pull request overview

This PR upgrades the Sorbet type checking level from typed: true to typed: strict for the cask/metadata.rb file, as part of the broader effort tracked in issue #17297. The upgrade requires adding explicit type signatures to all methods and making minor refactorings to satisfy strict type checking requirements.

Key changes:

• Added Sorbet type signatures to all public and private methods in the Metadata module
• Refactored metadata_timestamped_path to use a case statement for clearer control flow
• Added defensive programming to reject invalid timestamp symbols

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
Library/Homebrew/cask/metadata.rb	Upgraded from typed: true to typed: strict; added type signatures to all methods; refactored metadata_timestamped_path to use case statement with defensive symbol validation
Library/Homebrew/cask/cask.rb	Modified timestamped_versions to explicitly convert Pathname to string before passing to Pathname.glob, likely to satisfy strict type checking requirements

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