Update dependency tsdown to v0.21.8

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
tsdown (source)	0.21.7 → 0.21.8

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Release Notes

rolldown/tsdown (tsdown)

v0.21.8

Compare Source

   🚀 Features

• Upgrade rolldown  -  by @​sxzz (7f887)
• attw: Improve ignoreRules type to autocomplete known values  -  by @​mrlubos in #​892 (c8f5c)
• create-tsdown: Add Vite Plus template option  -  by @​sxzz (daed0)
• exports: Add extensions option for subpath export keys  -  by @​SinhSinhAn and @​sxzz in #​899 (1bb7a)
• target: Add support for baseline-widely-available target  -  by @​sxzz in #​896 (d6a16)

   🐞 Bug Fixes

• Export type only for cjs dts re-export  -  by @​sxzz (25510)
• Exclude shim file from bundled dependency hint  -  by @​sxzz in #​909 (3f8de)
• dts: Skip cjs dts reexport for non-entry chunks  -  by @​sxzz (5fee2)

    View changes on GitHub

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[coveralls-official]

coverage: 100.0%. remained the same — renovate/tsdown-0.x-lockfile into main