chore: release v2.9.0

Author: yyx990803

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vue/repl",
-  "version": "2.8.1",
+  "version": "2.9.0",
   "description": "Vue component for editing Vue components",
   "packageManager": "[email protected]",
   "type": "module",
@@ -43,6 +43,7 @@
     "build-preview": "vite build -c vite.preview.config.ts",
     "format": "prettier --write .",
     "release": "bumpp -r",
+    "changelog": "conventional-changelog -p angular -i CHANGELOG.md -s",
     "prepublishOnly": "npm run build"
   },
   "simple-git-hooks": {
@@ -75,6 +76,7 @@
     "@vue/language-service": "1.9.0-alpha.3",
     "bumpp": "^9.2.0",
     "codemirror": "^5.65.16",
+    "conventional-changelog-cli": "^4.1.0",
     "fflate": "^0.8.1",
     "hash-sum": "^2.0.0",
     "lint-staged": "^15.1.0",