Avoid overflow in linspace test

[antonwolfy]

The PR resolves overflow issue observing in test_linspace_mixed_start_stop2 test when running with DPNP_TEST_ALL_INT_TYPES=1 on ARL-S machine.

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[github-actions]

View rendered docs @ https://intelpython.github.io/dpnp/pull/2451/index.html

[coveralls]

coverage: 71.711%. remained the same
when pulling 5251b7d on avoid-overflow-in-linspace-test
into 8b4a332 on master.

[github-actions]

Array API standard conformance tests for dpnp=0.18.0dev2=py312he4f9c94_17 ran successfully.
Passed: 1229
Failed: 0
Skipped: 9