chore: unpin rollup

[benmccann]

Description

Allow Vite to use newer versions of Rollup as they are released

Additional context

I ran into a problem because SvelteKit is using ^3.5.1, which just started pulling in 3.6.0 and caused our CI to fail because there's multiple versions and it can't share types across them.

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

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• Read the Contributing Guidelines.
• Read the Pull Request Guidelines and follow the Commit Convention.
• Check that there isn't already a PR that solves the problem the same way to avoid creating a duplicate.
• Provide a description in this PR that addresses what the PR is solving, or reference the issue that it solves (e.g. fixes #123).
• Ideally, include relevant tests that fail without this PR but pass with it.