feat(config-lerna-scopes): keep supporting lerna v3

Author: escapedcat

@commitlint/config-lerna-scopes/package.json

@@ -26,7 +26,7 @@
   },
   "homepage": "https://github.com/conventional-changelog/commitlint#readme",
   "peerDependencies": {
-    "lerna": "^4.0.0"
+    "lerna": "^3.0.0 || ^4.0.0"
   },
   "engines": {
     "node": ">=v10"