Fix Git hooks

[danielamorse]

Jira

https://pegadigitalit.atlassian.net/browse/DS-131

Summary

Fix pre-commit, pre-push, Git hooks.

Details

Git hooks appeared to stop working. Actually, they are working when you commit from command line, but are skipped if you use Source Tree, as I do.

Looks like there are issues with both Husky (which we use for hooks) and Source Tree that contribute to this issue (see issue), but it can be fixed by simply downgrading Husky.

How to test

• On master, edit packages/components/bolt-popover/src/popover.scss (L40-41) and switch the order of the display and position rules, so that position comes first. This should produce a stylint error.
• Stage and commit the file from command line, verify pre-commit hook throws an error.
• Repeat in SourceTree, verify it successfully commits.
• Checkout this feature branch and repeat above steps, verify SourceTree now throws an error on commit. Note: be sure to run yarn after switching branches.

[mikemai2awesome]

I checked both Github desktop app and SourceTree, both cannot commit and gets an error. Working as expected.