Bump @actions/exec from 1.1.1 to 3.0.0 (#405)

* Bump @actions/exec from 1.1.1 to 3.0.0

Bumps [@actions/exec](https://github.com/actions/toolkit/tree/HEAD/packages/exec) from 1.1.1 to 3.0.0.
- [Changelog](https://github.com/actions/toolkit/blob/main/packages/exec/RELEASES.md)
- [Commits](https://github.com/actions/toolkit/commits/HEAD/packages/exec)

---
updated-dependencies:
- dependency-name: "@actions/exec"
  dependency-version: 3.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

* Modernize JS somewhat

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Paulo F. Oliveira <paulo.ferraz.oliveira@gmail.com>

.gitignore

@@ -1,2 +1,3 @@
-node_modules/**
-test/.tool-versions
+/node_modules
+/test/.tool-versions
+/dist/package.json