chore(deps): update dependency cypress to v16

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
cypress (source)	^15.21.1 → ^16.0.0

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Release Notes

cypress-io/cypress (cypress)

v16.0.0

Compare Source

Changelog: https://docs.cypress.io/app/references/changelog#16-0-0

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Note

Low Risk
Dev-only major dependency bump with no runtime code changes; main risk is CI or local environments still on Node 20 failing to satisfy Cypress 16’s engine requirement.

Overview
Bumps the Cypress dev dependency from ^15.21.1 to ^16.0.0 in package.json, with the lockfile updated to Cypress 16.0.0 and a transitive dayjs refresh (1.11.21 → 1.11.23).

There are no application or plugin source changes—only install metadata. Cypress 16 also tightens supported Node versions to ^22, ^24, or ≥26 (Node 20 is no longer in range), so local installs and CI need a compatible Node version for Cypress-related dev workflows.

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[cypress-app-bot]

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