build(deps): update commitlint monorepo to v20

Author: renovate[bot]

package.json

@@ -1,7 +1,7 @@
 {
   "devDependencies": {
-    "@commitlint/cli": "^19.6.0",
-    "@commitlint/config-conventional": "^19.6.0",
+    "@commitlint/cli": "^20.0.0",
+    "@commitlint/config-conventional": "^20.0.0",
     "@inabagumi/prettier-config": "^3.0.0",
     "@types/react": "^19.0.1",
     "eslint": "^8.57.1",