No HardwareIdentityConfiguration for IdentityConfiguration

I recently updated to 0.10.0 and encrypted my .pem file.

I believe running older versions of dfx leads to the following error:
No HardwareIdentityConfiguration for IdentityConfiguration.

@Severin @claudio

Yes, encrypted pem files are not backwards-compatible. You’d have to export it in 0.10.0 and re-import in an unencrypted identity if you want to use it in an older version.