make cypress optional

package.json

@@ -39,7 +39,6 @@
     "@vitejs/plugin-vue": "^3.0.1",
     "@vue/runtime-core": "^3.2.37",
     "autoprefixer": "^10.4.7",
-    "cypress": "^10.3.0",
     "eslint": "^8.20.0",
     "eslint-config-prettier": "^8.5.0",
     "eslint-plugin-vue": "^9.2.0",
@@ -54,5 +53,8 @@
   "vetur": {
     "tags": "vetur/tags.json",
     "attributes": "vetur/attributes.json"
+  },
+  "optionalDependencies": {
+    "cypress": "^10.3.1"
   }
 }