* Upgrade "ansi-regex" 5.0.0 => 5.0.1
And various other stuff because npm can't just upgrade one thing in the
lockfile, it need to upgrade everything it can. Move along, nothing
interesting to see here.
* Upgrade "eslint" 6 => 7
And also unpin the minor version. This resolves a bunch of "critical"
audit advisories from transitive dependencies.
Also updating and adding whatever the new version of npm wants to be
updated and added in its package files. This should not affect the
behavior of the action.
It's not like we need any new features, but let's bump the versions
because we are in JavaScript land.
Also, run "npm audit" regularly, just in case a serious vulnerability
is discovered.
Now that I know how to write some simple action, let's make a stub
more complete. For example, I already know what inputs I would like
to handle for this action.