Bump minimum NumPy version in pyproject.toml

[ndgrigorian]

This PR proposes bumping the minimum NumPy version per deprecation schedule given by NEP 29

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[github-actions]

View rendered docs @ https://intelpython.github.io/dpctl/pulls/2192/index.html

[coveralls]

coverage: 86.276%. remained the same
when pulling 49cb38f on bump-minimum-numpy-version
into 70920d3 on master.

[github-actions]

Array API standard conformance tests for dpctl=0.22.0dev0=py310h93fe807_24 ran successfully.
Passed: 1111
Failed: 47
Skipped: 82