add upgrade gcp bom workflow

[derrickaw]

1. add workflow to create PR to upgrade gcp bom if newer version exists weekly
2. https://github.com/apache/beam/actions/runs/26528828786

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Summary of Changes

Hello, 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 introduces a new utility script designed to automate the monitoring of Google Cloud Platform libraries BOM versions. By comparing the latest available version from Maven Central against the version currently defined in the project's Gradle configuration, the script provides a mechanism to trigger alerts or workflows when an upgrade is required.

Highlights

• New Automation Script: Added a Python script to check for updates to the Google Cloud Platform libraries BOM.
• CI Integration: The script exports GITHUB_OUTPUT variables to facilitate automated version upgrade checks in CI workflows.

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Ignored Files

• Ignored by pattern: .github/workflows/** (2)
  • .github/workflows/README.md
  • .github/workflows/beam_Upgrade_GCP_BOM.yml

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Code Review

This pull request introduces a new Python script, gcp_bom_upgrade_check.py, designed to compare the latest Google Cloud Platform libraries BOM version from Maven Central with the version currently defined in the project's Gradle build configuration. The review comments point out several opportunities to improve the script's robustness: adding a timeout to the network request to prevent hanging, resolving the file path dynamically to allow execution from directories other than the repository root, and parsing version strings more defensively to handle non-integer suffixes safely.

[derrickaw]

assign set of reviewers

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