chore(deps): update dependency tsdown to v0.15.6

[renovate]

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This notice will be removed on 2025-10-07.

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This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
tsdown	0.15.4 -> 0.15.6

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Release Notes

rolldown/tsdown (tsdown)

v0.15.6

Compare Source

   🐞 Bug Fixes

• watch: Watch relative files  -  by @​sxzz (afeab)

    View changes on GitHub

v0.15.5

Compare Source

   🚀 Features

• Add inlineOnly option  -  by @​sxzz (e3bce)
• report: Add gzip option to control gzip compression reporting  -  by @​rznn7 in #​507 (9724f)

   🐞 Bug Fixes

• Debounce watch  -  by @​sxzz (4714e)
• Legacy silent flag  -  by @​sxzz (b6086)
• Set logger level for rolldown  -  by @​sxzz (3b059)

   🏎 Performance

• require pure cjs deps  -  by @​sxzz (091b8)

    View changes on GitHub

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