build(deps-dev): Bump dependency knip to ^6.7.0 (#263)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package-lock.json

@@ -40,7 +40,7 @@
     "github-markdown-css": "^5.9.0",
     "handlebars": "^4.7.9",
     "js-yaml": "^4.1.1",
-    "knip": "^6.6.2",
+    "knip": "^6.7.0",
     "showdown": "^2.1.0",
     "showdown-footnotes": "^2.1.2",
     "showdown-highlight": "^3.1.0"