[Snyk] Security upgrade jest from 23.6.0 to 26.0.0

[monzerfoda]

Snyk has created this PR to fix 1 vulnerabilities in the npm dependencies of this project.

Snyk changed the following file(s):

• packages/scripts/package.json

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Allocation of Resources Without Limits or Throttling SNYK-JS-QS-14724253	828

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🦉 Allocation of Resources Without Limits or Throttling

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[chatgpt-codex-connector]

Update node engine to match Jest 26 requirements

Jest 26 drops support for Node 8/9, but @wordpress/scripts still advertises "node": ">=8" in its engines (and the root package does the same). That means installs on Node 8/9—which the package explicitly claims to support—will now fail or be blocked once this dependency is picked, even though the upgrade is only meant to address a vulnerability. Please either raise the engine constraint alongside this bump or keep Jest on a Node‑8‑compatible major so supported environments don’t break.

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