chore(deps): update commitlint monorepo to v20

Author: renovate[bot]

package.json

@@ -77,8 +77,8 @@
     "@babel/core": "^7.4.4",
     "@babel/preset-env": "^7.4.4",
     "@babel/preset-typescript": "^7.3.3",
-    "@commitlint/cli": "^19.0.0",
-    "@commitlint/config-conventional": "^19.0.0",
+    "@commitlint/cli": "^20.0.0",
+    "@commitlint/config-conventional": "^20.0.0",
     "@eslint-community/eslint-plugin-eslint-comments": "^4.4.1",
     "@schemastore/package": "^0.0.10",
     "@semantic-release/changelog": "^6.0.0",