chore(deps): pin dependency lerna to 2.11.0

Author: renovate-bot

package.json

@@ -113,7 +113,7 @@
     "husky": "1.3.1",
     "imports-loader": "0.8.0",
     "json-loader": "0.5.7",
-    "lerna": "^2.11.0",
+    "lerna": "2.11.0",
     "lint-staged": "9.0.1",
     "mocha": "3.5.3",
     "nodemon": "1.19.1",