chore: update dependencies script

[manuel3108]

Adds a script pnpm update-dependencies to automatically update the dependencies. This script focuses on

• updating package.json dependencies (using pnpm update --recursive)
• updating dependencies that are used while scaffolding addons (using regex and fetch to npm)

As discussed, updating the actual dependencies (packages and addons) should happen separately, since both also require code changes, although minimal.

[changeset-bot]

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Latest commit: 5db2662

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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[pkg-pr-new]

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pnpm add https://pkg.pr.new/sveltejs/cli/sv@314

pnpm add https://pkg.pr.new/sveltejs/cli/svelte-migrate@314

commit: e032ff7