Set contents: write for GH workflow permissions

[dchyun]

📌 Summary

This PR updates our GH workflows from contents: read to contents: write for all workflows that need to edit or open PRs

🔗 External links

Jira ticket: HDS-6557

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👀 Component checklist

• Percy was checked for any visual regression
• A changelog entry was added via Changesets if needed (see templates here)

💬 Please consider using conventional comments when reviewing this PR.

📋 PCI review checklist

• If applicable, I've documented a plan to revert these changes if they require more than reverting the pull request.
• If applicable, I've worked with GRC to document the impact of any changes to security controls.
  Examples of changes to controls include access controls, encryption, logging, etc.
• If applicable, I've worked with GRC to ensure compliance due to a significant change to the in-scope PCI environment.
  Examples include changes to operating systems, ports, protocols, services, cryptography-related components, PII processing code, etc.

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Project	Deployment	Actions	Updated (UTC)
hds-showcase	Ready	Preview	Aug 3, 2026 2:08pm
hds-website	Ready	Preview	Aug 3, 2026 2:08pm