fix(workflows): add id-token permission for validate-request workflow

[MarkusNeusinger]

Summary

• Add missing id-token: write permission to bot-validate-request.yml
• Required for Claude Code action's OIDC authentication

Test

• Rerun validation on Issue Plot: Basic Line Chart [line-basic] #75 after merge

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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[Copilot]

Pull request overview

This PR adds the id-token: write permission to the bot-validate-request.yml workflow, which is required for OIDC authentication when using the Claude Code action (anthropics/claude-code-action@v1). This aligns the workflow with the same pattern used in util-claude.yml, which also uses the Claude Code action and has the same permission.

Key changes:

• Add missing id-token: write permission to enable OIDC authentication for Claude Code action

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[Copilot]

The same id-token: write permission should also be added to .github/workflows/gen-library-impl.yml which uses the same anthropics/claude-code-action@v1 action (line 124) but is missing this permission. The util-claude.yml workflow already has this permission set correctly.