Installs warn about critical vulnerabilities

[eatyourgreens]

Expected behavior

Installs shouldn't warn about vulnerabilities?

Current behavior

Please include any error messages from the browser console and/or screenshots

npm ci warns about critical vulnerabilities, because of outdated build dependencies.

Steps to replicate

Run npm ci or npm audit.

[eatyourgreens]

The warning itself is generated by an old Babel 6 plugin, which is no longer maintained (or supported by Babel 7.)

Fixed by #7114, which cleans up the Babel config for modern browsers.