test: disable linux user override tests as they fail in Github

What was the problem/requirement? (What/Why)

The new linux user override tests fail almost all the time on Github despite always passing with a local setup.

We should disable them to avoid more noise in the canaries.

We will be investigating the failed tests and enable when possible, it is suspected it may be an instance difference on local vs the github causing this.

What was the solution? (How)

Disable the tests for now.

What is the impact of this change?

No more noisy canaries for now.

How was this change tested?

hatch run fmt hatch build

Was this change documented?

Is this a breaking change?

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aws-deadline / deadline-cloud-worker-agent