• Turn-off the keytar to safe storage migration
• Warn users "jump" updating from a version pre-1.41.0, with un-migrated connections, to either import/export or upgrade more gradually
• Remove keytar, and any related code from the bundle

NOTE: This is a follow up to switching to safeStorage. We moved from keytar to the electron safe storage in 1.41.0, and kept keytar in compass with an automated migration for a period of time.

In order to turn off the keytar migration and remove it entirely from compass we need to detect users with unmigrated secrets (pre-1.41.0) and warn them to either perform an import/export, or to migrate gradually. "pre 1.41.0" connections with keytar are missing a "version" property, and can be detected that way.