Cordova iOS updated to 6.2.0

The VoltBuilder servers are now using cordova-cli 6.2.0.

The changes appear to be minor - updating dependancies and doing some housekeeping. From what we can tell, most users will notice no difference. Our tests ran cleanly, without issues.

Here are the complete release notes from Cordova:
https://cordova.apache.org/announcements/2021/02/04/cordova-ios-release-6.2.0.html