fix: grant write permissions for review queue sync

[darshit2308]

Description:
Adds pull-requests: write permissions to review-sync.yml to resolve the 403 Resource not accessible by integration error encountered during the label sync phase.

Notes for reviewer:
Opening a follow-up PR specifically to fix the missing GitHub Actions permissions we discussed.

Checklist

• Documented (Code comments, README, etc.)
• Tested (unit, integration, etc.)

[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

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[Copilot]

Pull request overview

Updates the GitHub Actions workflow token permissions for the Review Queue Label Sync workflow to allow it to write to pull requests (needed for label/PR state updates during the sync job), addressing the 403 Resource not accessible by integration failure during label sync.

Changes:

• Change pull-requests permission from read to write in .github/workflows/review-sync.yml.

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Pro

Run ID: 2b291fb6-c648-4db9-857e-dd8ce510b9d6

📥 Commits

Reviewing files that changed from the base of the PR and between c996045 and b0c539d.

📒 Files selected for processing (1)

• .github/workflows/review-sync.yml

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Walkthrough

The review-sync GitHub Actions workflow updates its top-level permissions to grant pull-requests: write (was read). All other workflow settings and steps remain unchanged.

Changes

Workflow Pull Request Permissions

Layer / File(s)	Summary
Workflow Permissions .github/workflows/review-sync.yml	Workflow-level permissions.pull-requests changed from read to write, allowing the workflow token to perform pull request API operations.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarizes the main change: granting write permissions for pull-requests in the review-sync workflow to fix a permissions error.
Description check	✅ Passed	The description is directly related to the changeset, explaining the purpose of adding pull-requests write permissions and referencing the 403 error that prompted the fix.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[exploreriii]

Could you rebase with latest changes please, your main is out dated
https://github.com/darshit2308/hiero-sdk-python

this PR should not contain 14 commits from the prior PR