chore(core): upgrade to vite 3

packages/core/package.json

@@ -12,8 +12,8 @@
   "bugs": {
     "url": "https://github.com/bcakmakoglu/vue-flow/issues"
   },
-  "main": "./dist/vue-flow-core.cjs.js",
-  "module": "./dist/vue-flow-core.es.js",
+  "main": "./dist/vue-flow-core.js",
+  "module": "./dist/vue-flow-core.mjs",
   "types": "./dist/index.d.ts",
   "unpkg": "./dist/vue-flow-core.iife.js",
   "jsdelivr": "./dist/vue-flow-core.iife.js",
@@ -44,7 +44,7 @@
   "devDependencies": {
     "@rollup/plugin-replace": "^4.0.0",
     "@types/d3": "^7.4.0",
-    "@vitejs/plugin-vue": "^2.3.4",
+    "@vitejs/plugin-vue": "^3.2.0",
     "autoprefixer": "^10.4.13",
     "postcss": "^8.4.16",
     "postcss-cli": "^9.1.0",
@@ -52,7 +52,7 @@
     "ts-patch": "^2.0.2",
     "typescript-transform-paths": "^3.4.4",
     "unplugin-auto-import": "^0.11.4",
-    "vite": "^2.9.15",
+    "vite": "^3.2.2",
     "vite-plugin-vue-type-imports": "0.2.0",
     "vue-tsc": "^1.0.9"
   },