[aw] Upgrade available

## Agentic Workflow Upgrade Available

A new version of the agentic workflow tooling is available. Run `gh aw upgrade` to apply it.

**Files that will be updated:**

- `.github/aw/actions-lock.json`

### How to apply

- **Via @copilot**: Add a comment `@copilot upgrade agentic workflows` on this issue
- **Via CLI**: Run `gh aw upgrade` in your local checkout

Start with the gh aw upgrade command and inspect .github/aw/actions-lock.json before and after running it in a local checkout. Done means the available agentic workflow upgrade has been applied and the listed lock file is updated.

Written by the indexing model from the issue text.