fix(deps): update dependency @ethersproject/wallet to ^5.8.0

[metamask-ci]

This PR contains the following updates:

Package	Change	Age	Confidence
@ethersproject/wallet (source)	^5.7.0 → ^5.8.0

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Note

Low Risk
Routine minor dependency bump with no code changes; wallet usage is limited to signature verification via a stable public API.

Overview
Updates @metamask/transaction-controller to depend on @ethersproject/wallet ^5.8.0 (from ^5.7.0), with matching yarn.lock resolution and an [Unreleased] changelog entry.

There are no application or test source changes—only dependency metadata. The package still uses verifyMessage from this library (e.g. EIP-7702 contract signature verification in signature.ts).

^{Reviewed by Cursor Bugbot for commit 7b394da. Bugbot is set up for automated code reviews on this repo. Configure here.}

[metamask-ci]

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