v7

Update token action dependencies to fix deprecation warnings

- Add package.json with modern dependency versions
- Update @actions/core 1.6.0 -> 1.11.1 (uses GITHUB_OUTPUT env file)
- Update @actions/github 5.0.0 -> 6.0.0
- Update @octokit/auth-app 3.6.1 -> 7.1.5
- Fixes punycode deprecation warning (removed tr46/whatwg-url/node-fetch chain)
- Fixes set-output deprecation warning

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>