Update dependency diff to v4.0.4

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
diff	4.0.2 → 4.0.4

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Release Notes

kpdecker/jsdiff (diff)

v4.0.4

Only change from 4.0.2 is a backport of the fix to GHSA-73rr-hh4g-fpgx.

v4.0.3

Accidental release - do not use.

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[Copilot]

Pull request overview

This PR updates the diff npm devDependency to address a security advisory fix backported in diff@4.0.4.

Changes:

• Bump diff from 4.0.2 to 4.0.4 in package.json.
• Update package-lock.json to lock diff@4.0.4 with updated tarball URL and integrity hash.

Reviewed changes

Copilot reviewed 1 out of 2 changed files in this pull request and generated no comments.

File	Description
package.json	Updates diff devDependency version to 4.0.4.
package-lock.json	Updates the lock entry for diff to 4.0.4 (resolved + integrity).

[mekarpeles]

Consolidated into #12558 (Python) or #12559 (JS) — see those PRs for test results. Closing in favor of the consolidated PR.

[renovate]

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