chore(deps): update dependency webpack-merge to v5.9.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
webpack-merge	5.8.0 -> 5.9.0

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Release Notes

survivejs/webpack-merge

### [`v5.9.0`](https://togithub.com/survivejs/webpack-merge/blob/HEAD/CHANGELOG.md#​590--2023-05-22) [Compare Source](https://togithub.com/survivejs/webpack-merge/compare/v5.8.0...cdd04254eb592f618802a675d2ad785393ab9ff1) - Feat - Support deep merging when rule is a merge. [#​193](https://togithub.com/survivejs/webpack-merge/issues/193), [#​206](https://togithub.com/survivejs/webpack-merge/issues/206)

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Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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• [ ] If you want to rebase/retry this PR, check this box

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