Fix pytest error and properly configure circle-all

[BenjaminLowry]

Before this PR

After this PR

Fixes an issue with the old version of pytest-pylint we're using and modifies the circle-all CI to be better in preparation for making it a required check.
==COMMIT_MSG==
==COMMIT_MSG==

Possible downsides?

[changelog-app]

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• feature: A new feature of the service.
• improvement: An incremental improvement in the functionality or operation of the service.
• fix: Remedies the incorrect behaviour of a component of the service in a backwards-compatible way.
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  operation of the service itself.
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  performing database surgery, ...) at the time of upgrade for it to succeed.
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Type

• Feature
• Improvement
• Fix
• Break
• Deprecation
• Manual task
• Migration

Description

Fix pytest error and properly configure circle-all

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