chore(legacy): update peer dep Vite to 6 (#18771)

Author: sapphi-red

packages/plugin-legacy/package.json

@@ -53,7 +53,7 @@
   },
   "peerDependencies": {
     "terser": "^5.4.0",
-    "vite": "^5.0.0"
+    "vite": "^6.0.0"
   },
   "devDependencies": {
     "acorn": "^8.14.0",