Dependency `diff` v4.0.2 has security notifications from Dependabot

[anomiex]

GHSA-73rr-hh4g-fpgx

It doesn't appear that the uses of diff in Gutenberg packages are affected by the vulnerability, as the vulnerability affects the parsePatch and applyPatch functions while Gutenberg uses only diffChars and the Change type.

gutenberg/packages/block-editor/src/components/block-compare/index.js

Line 7 in e4b7728

import { diffChars } from 'diff/lib/diff/character';

gutenberg/packages/sync/src/quill-delta/Delta.ts

Lines 10 to 11 in e4b7728

	import type { Change } from 'diff';
	import { diffChars } from 'diff';

Regardless, I'd appreciate if you'd update the dependency so Dependabot stops complaining about it in our repo. Thanks!

[anomiex]

Diff v4.0.4 has been released with a backported fix, so while an upgrade might still be useful (cf. #75644), the justification for this issue is resolved.