ci: Set HF_HUB_OFFLINE=1 for CI tests

[chtruong814]

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What does this PR do ?

ci: Set HF_HUB_OFFLINE=1 for CI tests

Some CI tests would occasionally fail because it would make calls to HuggingFace. Let's see what fails and ensure we add the artifacts to cache to avoid this issue.

Addresses AUT-593

Collection: [Note which collection this PR will affect]

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[chtruong814]

/ok to test f981e93