Add a strict keyword to testing f/w

[antonwolfy]

This PR updates test f/w to align with the recent changes and to add a strict keyword to third party testing.

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[github-actions]

View rendered docs @ https://intelpython.github.io/dpnp/index.html

[coveralls]

coverage: 72.271%. remained the same
when pulling 752dd65 on update-third-party-testing
into 2966ae6 on master.

[github-actions]

Array API standard conformance tests for dpnp=0.18.0dev1=py312he4f9c94_7 ran successfully.
Passed: 1222
Failed: 0
Skipped: 9

[vlad-perevezentsev]

Looks good
Thank you @antonwolfy