chore(deps): update dependency knip to v6

Author: renovate[bot]

package.json

@@ -38,7 +38,7 @@
     "@changesets/write": "^0.4.0",
     "@effect/language-service": "^0.80.0",
     "@types/node": "catalog:",
-    "knip": "^5.88.1",
+    "knip": "^6.3.0",
     "pkg-pr-new": "^0.0.66",
     "tsdown": "catalog:",
     "ts-patch": "^3.3.0",