Should not use `^` for rolldown dependency

[sapphi-red]

Reproduction link or steps

tsdown/pnpm-workspace.yaml

Line 83 in d9f607b

rolldown: ^1.0.3

What is expected?

The version is pinned. (or at least ~)

What is actually happening?

^ is used.

Any additional comments?

Since tsdown uses the experimental API, using ^ may break in future versions.

tsdown/src/features/rolldown.ts

Line 18 in d9f607b

import { importGlobPlugin } from 'rolldown/experimental'