chore: bump @metamask/utils from ^11.12.0 to ^12.0.0

[cryptodev-2s]

Explanation

References

Checklist

• I've updated the test suite for new or updated code as appropriate
• I've updated documentation (JSDoc, Markdown, etc.) for new or updated code as appropriate
• I've communicated my changes to consumers by updating changelogs for packages I've changed
• I've introduced breaking changes in this PR and have prepared draft pull requests for clients and consumer packages to resolve them

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Note

Medium Risk
Preview-pinned shared crypto/utilities dependency with an Ethereum transaction library major bump affects the whole monorepo transitively, though no application code changed in this PR.

Overview
Pins @metamask/utils across the monorepo with a root resolutions entry to @metamask-previews/utils@11.12.1-preview-9962b7e, overriding the declared ^11.12.0 range so installs consistently use that preview artifact.

The lockfile refresh drops the older @ethereumjs/* v3/v4 transaction stack that @metamask/utils@11.12.0 pulled in and aligns the resolved @metamask/utils tree with @ethereumjs/tx@^5.4.0 plus bumped @metamask/superstruct, @noble/hashes, and @scure/base versions. No workspace package manifests or source files change beyond package.json and yarn.lock.

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[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	@​metamask-previews/​utils@​11.12.1-preview-4bb3dbb

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