chore: Migrate gsutil usage to gcloud storage

[gurusai-voleti]

Automated: Migrate {target_path} from gsutil to gcloud storage

This CL is part of the on going effort to migrate from the legacy gsutil tool to the new and improved gcloud storage command-line interface.
gcloud storage is the recommended and modern tool for interacting with Google Cloud Storage, offering better performance, unified authentication, and a more consistent command structure with other gcloud components. 🚀

Automation Details

This change was generated automatically by an agent that targets users of gsutil.
The transformations applied are based on the gsutil to gcloud storage migration guide.

⚠️ Action Required: Please Review and Test Carefully

While we have based the automation on the migration guide, every use case is unique.
It is crucial that you thoroughly test these changes in environments appropriate to your use-case before merging.
Be aware of potential differences between gsutil and gcloud storage that could impact your workflows.
For instance, the structure of command output may have changed, requiring updates to any scripts that parse it. Similarly, command behavior can differ subtly; the gcloud storage rsync command has a different file deletion logic than gsutil rsync, which could lead to unintended file deletions.

Our migration guides can help guide you through a list of mappings and some notable differences between the two tools.

Standard presubmit tests are run as part of this CL's workflow. If you need to target an additional test workflow or require assistance with testing, please let us know.

Please verify that all your Cloud Storage operations continue to work as expected to avoid any potential disruptions in production.

Support and Collaboration

The GCS CLI team is here to help! If you encounter any issues, have a complex use case that this automated change doesn't cover, or face any other blockers, please don't hesitate to reach out.
We are happy to work with you to test and adjust these changes as needed.

Contact: gcs-cli-hyd@google.com

We appreciate your partnership in this important migration effort!

#gsutil-migration

[gurusai-voleti]

Hi @franziska.hinkelmann, Can we get your review on this PR? Thanks!

[gemini-code-assist]

Summary of Changes

Hello @gurusai-voleti, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request updates the documentation for the imagemagick Cloud Functions examples to use the modern gcloud storage command-line interface instead of the legacy gsutil tool. This change is part of an automated, ongoing effort to standardize Cloud Storage interactions, aiming for better performance, unified authentication, and a more consistent command structure across Google Cloud services.

Highlights

• gsutil to gcloud storage Migration: This pull request automates the migration of gsutil commands to gcloud storage commands, aligning with Google Cloud's recommended practices for interacting with Cloud Storage.
• Documentation Updates: The README.md files for functions/imagemagick and functions/v2/imagemagick have been updated to reflect the new gcloud storage buckets create command for creating Cloud Storage buckets, replacing the deprecated gsutil mb.
• Automated Change & Review Requirement: This change was automatically generated as part of a larger migration effort. Reviewers are urged to carefully test the changes due to potential subtle differences in command behavior between gsutil and gcloud storage.

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[gemini-code-assist]

Code Review

This pull request automates the migration from gsutil to gcloud storage commands in README files. The changes are correct, but I've suggested an improvement. For better performance and cost-efficiency, it's a best practice to create storage buckets in the same location as the Cloud Function. I've added comments suggesting the use of the --location flag to the gcloud storage buckets create commands in both updated README files.