chore: upgrades husky

[philnash]

I constantly get caught by commitlint, mostly for using 73 characters these days, though it used to be for more reasons. I thought that maybe I could re-arrange the order in which the hooks ran in order to fail commitlint before running the entire test suite.

Then I looked at husky and it was at version 3 in this project compared to the latest available version 7.0.1. So, I decided to upgrade while looking into hook order.

This PR just upgrades husky.

Along the way I came to understand the git hook order. pre-commit runs, then prepare-commit-msg, then commit-msg.

The only way to have commitlint run before linting and test suite would be to run everything in the commit-msg hook. I've not implemented that yet as I wanted it to be a point of discussion. I opened #308 for this question.

Meanwhile, this should bring husky up to date successfully!

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