Build: Bump gcsfs from 2025.10.0 to 2026.4.0

[dependabot]

Bumps gcsfs from 2025.10.0 to 2026.4.0.

Release notes

Sourced from gcsfs's releases.

v2026.3.0

Support for Rapid Buckets

• Native Rapid Bucket Creation: You can now create Rapid buckets directly via the API, enabling high-throughput and low-latency workloads for co-located compute[ PR #769](fsspec/gcsfs#769).
• Zonal Write Tracking: Improved accuracy in byte-count tracking for writes to Rapid storage to prevent data corruption during large transfers[ PR #777](fsspec/gcsfs#777).
• ExtendedGcsFileSystem is now the default implementation. This allows GCSFS to automatically handle modern GCS features like Hierarchical Namespace (HNS) and Rapid buckets without manual configuration.

Note: If you need to disable these new defaults and return to the legacy GCSFileSystem behavior, set the environment variable: GCSFS_EXPERIMENTAL_ZB_HNS_SUPPORT=disable

Support for Hierarchical Namespace (HNS)

• Atomic Folder Moves: Leverages HNS to make folder renames/moves a single metadata operation (O(1)) rather than a slow "copy-all-files-then-delete" process[ PR #758](fsspec/gcsfs#758).
• Rename Race Conditions: Fixed a bug where rapid folder renames in HNS buckets could cause temporary inconsistencies[ PR #771](fsspec/gcsfs#771).

API & Core Improvements

• Cleaner Listing: The ls and list methods now filter out invalid keyword arguments, ensuring more predictable behavior and better error messages[ PR #759](fsspec/gcsfs#759).
• Graceful Shutdown: Enhanced the close() logic to ensure that all background writes and sessions are finished properly before the process exits[ PR #763](fsspec/gcsfs#763).
• Testing, Benchmarks, & Docs
• New Documentation: Added extensive guides for using Zonal and Rapid storage[ PR #792](fsspec/gcsfs#792 PR #788](fsspec/gcsfs#788).
• Benchmarking Framework: Integrated microbenchmarks to track performance, specifically targeting the 8x QPS improvements promised by Rapid buckets[ PR #775](fsspec/gcsfs#775 PR #770](fsspec/gcsfs#770).
• CI Stability: Significant fixes to the CI/CD pipeline and test coverage to handle the new default bucket types[ PR #785](fsspec/gcsfs#785 PR #772](fsspec/gcsfs#772).

Commits

• 286ee3a changelog (#827)
• 87117c9 Enhance Retry Logic and Configuration for Storage Control API (#787)
• 29d05fc fix: add fallback for missing _version.py when running from a raw git clone...
• 8b3dc61 fix: pass quota_project_id to AsyncGrpcClient in ExtendedGcsFileSystem (#825)
• ffdee6b Migrate from setuptools to hatch (#809)
• 960193e Fix location in _put_file (#821)
• 025666b Fix 'Task exception was never retrieved' in parallel_tasks_first_completed (#...
• 0279fa4 Fix the error message formatting in _rm_files (#820)
• 305ec9c benchmarks: implement cleanup-on-failure in Cloud Build (#813)
• 05da2bb Use moveTo API to move files for standard buckets (#800)
• Additional commits viewable in compare view

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