cypress: Replace cypress-cloud by cypress-split for parallel tests

Cypress >= 13.3 blocked the use of sorry-cypress and cypress-cloud in the cypress binary so we can no longer use these tools to execute parallel cypress tests on Jenkins.

Fortunately, it exists another tool called cypress-split that can be used for the same purpose without relying on a tests orchestration server.

So replace the use of sorry-cypress and cypress-cloud by cypress-split to still benefit of parallel cypress tests in CI jobs.

Depends on swh/infra/ci-cd/swh-jenkins-jobs!198 (merged).