chore(deps): update dependency @commitlint/config-conventional to v20

Author: renovate[bot]

package.json

@@ -43,7 +43,7 @@
   },
   "devDependencies": {
     "@commitlint/cli": "^19.8.1",
-    "@commitlint/config-conventional": "^19.8.1",
+    "@commitlint/config-conventional": "^20.0.0",
     "@vuepress/core": "^1.9.10",
     "@vuepress/helper": "2.0.0-rc.105",
     "@vuepress/plugin-copy-code": "2.0.0-rc.112",