deps: remove unused package?

Author: carsakiller

package.json

@@ -28,8 +28,7 @@
     "rehype-mermaid": "^3.0.0",
     "sass": "^1.91.0",
     "sharp": "^0.33.5",
-    "tippy.js": "^6.3.7",
-    "update": "^0.7.4"
+    "tippy.js": "^6.3.7"
   },
   "devDependencies": {
     "@playwright/test": "^1.55.0",