test/unpack_strategy: run extract with verbose

[cho-m]

Currently Gzip is failing in portable PRs but I can't reproduce it. Adding verbose to see if it gives more useful information

https://github.com/Homebrew/homebrew-core/actions/runs/29179553748/job/86656464924#step:4:322

  Error: UnpackStrategy::Gzip #extract
  
  Failure/Error: raise ErrorDuringExecution.new(command, status: @status, output: @output, secrets: @secrets)
  
  ErrorDuringExecution:
    Failure while executing; `/usr/bin/env gunzip -q -N -- /var/tmp/homebrew-tests-20260712-93573-91qu2m/temp/d20260712-93573-c36fsq/container.gz` exited with 2.
  Shared Example Group: "#extract" called from ./test/unpack_strategy/gzip_spec.rb:10

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[Copilot]

Pull request overview

This PR adjusts the UnpackStrategy extraction shared spec to run extracts in verbose mode to help diagnose an intermittent gunzip failure seen in portable CI runs.

Changes:

• Pass verbose: true to UnpackStrategy#extract in the shared #extract RSpec example to increase command output during test extraction.

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[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated no new comments.