Add support for creating isolated in-memory instances

[thgreasi]

Update balena-auth from 5.0.0 to 5.1.0

Depends-on: https://github.com/balena-io-modules/balena-auth/pull/35 Change-type: minor

Resolves: # HQ: See: Depends-on: Change-type: major|minor|patch

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Contributor checklist

• [ ] Includes tests
• [ ] Includes typings
• [ ] Includes updated documentation
• [ ] Includes updated build output