chore(deps): update devdependency knip to v6

Author: renovate[bot]

package.json

@@ -134,7 +134,7 @@
     "fast-check": "4.6.0",
     "h3": "1.15.8",
     "h3-next": "npm:h3@2.0.1-rc.16",
-    "knip": "5.88.0",
+    "knip": "6.0.2",
     "markdown-it-anchor": "9.2.0",
     "schema-dts": "1.1.5",
     "storybook": "catalog:storybook",