chore(deps): update dependency tsup to v6

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
tsup	^5.12.4 -> ^6.0.1

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Release Notes

egoist/tsup

v6.0.1

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Bug Fixes

• add missing tsup-node command (a175339)

v6.0.0

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Upgrade guide

• shims option is false by default: If you're dual-publishing (i.e. --format esm,cjs) and using platform specific API like import.meta.url, __dirname and __filename, you need to manually enable --shims flag now, because import.meta.url won't work in a cjs module, and __dirname, __filename won't work in an esm module.
• target option is now node14 by default: previously it was node12, the minimal node version that tsup can run in is also changed to node14

New Features

• New treeshake option: You can use Rollup for tree-shaking now, read more https://tsup.egoist.sh/#tree-shaking

v5.12.9

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Bug Fixes

• deps: Update rollup and rollup-plugin-dts to latest versions (#​632) (a792668)

Features

• minor: allow tsup config function to be asynchronous (#​627) (ad2629a)

v5.12.8

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Bug Fixes

• update source-map to 0.8.0-beta.0, closes #​623 (c67e03d)

v5.12.7

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Bug Fixes

• define a build-time constant called TSUP_FORMAT (f4a56ed)
• resolve to package.json only if tsup key exists (#​622) (67eea53)

v5.12.6

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Bug Fixes

• dts: use relative baseUrl in tsconfig, closes #​611 (df40e12)

v5.12.5

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Bug Fixes

• Exit Code returns 0 for failed builds, closes #​606 (b3ad95f)

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