Upgrading to Laravel 6.x

[weerd]

What's this PR do?

This pull request upgrades Aurora from Laravel 5.8 to 6.x! 🆙

How should this be reviewed?

👀

Any background context you want to provide?

Since the app lacks PHP Unit tests, I'm taking this one upgrade at a time!

Relevant tickets

References Pivotal #172383668.

Checklist

• [x] This PR has been added to the relevant Pivotal card.
• [ ] Added appropriate feature/unit tests.

[mendelB]

Thanks for all the explanations @weerd! 🙌