Bump toshimaru/auto-author-assign from 1.4.0 to 2.1.1

Bumps [toshimaru/auto-author-assign](https://github.com/toshimaru/auto-author-assign) from 1.4.0 to 2.1.1.
- [Release notes](https://github.com/toshimaru/auto-author-assign/releases)
- [Changelog](https://github.com/toshimaru/auto-author-assign/blob/main/CHANGELOG.md)
- [Commits](https://github.com/toshimaru/auto-author-assign/compare/v1.4.0...v2.1.1)

---
updated-dependencies:
- dependency-name: toshimaru/auto-author-assign
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/auto-author-assign.yml

@@ -13,4 +13,4 @@ jobs:
     if: github.repository_owner == 'consuldemocracy'
     runs-on: ubuntu-latest
     steps:
-      - uses: toshimaru/auto-author-assign@v1.4.0
+      - uses: toshimaru/auto-author-assign@v2.1.1