Bump toshimaru/auto-author-assign from 1.3.0 to 1.4.0

Bumps [toshimaru/auto-author-assign](https://github.com/toshimaru/auto-author-assign) from 1.3.0 to 1.4.0.
- [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/v1.3.0...v1.4.0)

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

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

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

@@ -8,6 +8,6 @@ jobs:
     assign-author:
         runs-on: ubuntu-latest
         steps:
-            - uses: toshimaru/auto-author-assign@v1.3.0
+            - uses: toshimaru/auto-author-assign@v1.4.0
               with:
                   repo-token: "${{ secrets.GITHUB_TOKEN }}"