Create new vaults in format 7 by default

[cyberduck]

3308dc2 created the issue

It seems that new Cryptomator version uses a new format for encryption.
If I create a new encrypted folder with CyberDuck and try to open it with Cryptomator it is always necessary to transform this folder to the new Cryptomator format.
Please check it.

[cyberduck]

@dkocher commented

We currently default to the old format for new vaults. Reading vaults in the new format 7 is supported. See #10825.

[cyberduck]

@dkocher commented

In ca14c2f.

[cyberduck]

@dkocher commented

Milestone renamed