chore(deps): update dependency knip to ^6.9.0

This MR contains the following updates:

Package	Change	Age	Confidence
knip (source)	^6.7.0 → ^6.9.0

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Release Notes

webpro-nl/knip (knip)

v6.9.0: Release 6.9.0

Compare Source

• Expose types for JSON reporter (961b734)

v6.8.0: Release 6.8.0

Compare Source

• feat: add WXT plugin (#​1703) (9167557) - thanks @​sebastianbreguel!
• Add support for pnpm@​11 new commands (#​1706) (c937697) - thanks @​PatrykWalach!
• Fix case of spread export → other exports used (resolve #​1705) (0f94d2d)
• Add more pnpm commands + tests (f2819b3)
• Bump oxc-parser (5c21d27)

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