Update dependency cypress-split to v1.15.4

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
cypress-split	1.15.3 -> 1.15.4

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Release Notes

bahmutov/cypress-split (cypress-split)

### [`v1.15.4`](https://togithub.com/bahmutov/cypress-split/releases/tag/v1.15.4) [Compare Source](https://togithub.com/bahmutov/cypress-split/compare/v1.15.3...v1.15.4) ##### Bug Fixes - polyfill structuredClone ([#​150](https://togithub.com/bahmutov/cypress-split/issues/150)) ([6e9a6fe](https://togithub.com/bahmutov/cypress-split/commit/6e9a6fe1254bede336e3c4e5c493de085932fa8f)) - round durations to ms ([#​148](https://togithub.com/bahmutov/cypress-split/issues/148)) ([e4ecd2f](https://togithub.com/bahmutov/cypress-split/commit/e4ecd2fedc1911c2dc56d76aedd27ce695a64445))

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