Addressing issue nvim-lua/kickstart.nvim#570
This improves the github workflow to no longer require manual
approval for PRs from first time contributors.
Changes the github event from pull_request to pull_request_target
and adds an explicit PR head checkout
GitHub Action used:
https://github.com/marketplace/actions/stylua
This runs `stylua --check` on a PR and it will show
success or failure. The suggested stylua changes can
be inspected when clicking on the details.
The PR can still be merged even if the check fails.