ci: remove unused release workflow permissions

[marandaneto]

💡 Motivation and Context

The version-bump job grants the built-in GITHUB_TOKEN repository write access even though its repository writes use a separate GitHub App token.

Remove unused actions-write from the publisher. Retain publisher contents-write for tags and GitHub releases.

Lower version-bump to contents: read. Preserve the App-authenticated checkout and all App-token commit, tag and release operations. No authentication input or App permission changes.

Read-only workflow inheritance remains allowed. This reduces the built-in token's permissions, not the job's separate App-token authority or build/publish exposure. No package release or changeset is needed.

💚 How did you test it?

• Checked every repository-write operation in the affected job and traced it to the App token, including the pinned action contracts.
• Compared parsed YAML with the baseline and verified that only the intended permission keys changed. Triggers, steps, dependencies, secrets and token wiring are unchanged.
• actionlint -shellcheck= -pyflakes= and git diff --check passed. Existing shell-lint diagnostics were checked against the baseline and left unchanged.
• Reviewed the final branch diff. No live release or SDK tests were run for this permission-only change.

📝 Checklist

• I reviewed the submitted code.
• I added tests to verify the changes. No SDK tests apply to this permission-only change.
• I updated the docs if needed. No documentation change is needed.
• No breaking change or entry added to the changelog.

If releasing new changes

No package release or changeset is needed.

🤖 Agent context

Autonomy: Human-driven (agent-assisted)

Implemented with Pi and delegate agents using file tools, Git, GitHub CLI, Python/PyYAML and actionlint. The parent agent reviewed the final diff. Work was performed in a dedicated worktree. Autoreview was skipped because all changes are GitHub workflow permission administration. No session transcript was published. Human review is required.

[greptile-apps]

_{Reviews (1): Last reviewed commit: "ci: remove unused release actions permis..." | Re-trigger Greptile}