Run on pull_request_target to pick up environment variables and secrets on forks

[mikealfare]

Checklist

• You followed contributing section
• You kept your Pull Request small and focused on a single feature or bug fix.
• You added unit testing when necessary
• You added functional testing when necessary

[mikealfare]

The checks aren't running because this branch does not have a trigger (this branch says to look at main) and main does not have a trigger (main says to look at the incoming branch). Once this is merged, the next PR should trigger the same checks since then main will get triggered on a PR.

[nicor88]

@mikealfare good catch here, we faced this issue back then on PR coming from a fork, should resolve the issue on #746