Update dependency conventional-changelog-cli to v2.0.31

Author: renovate-bot

package-lock.json

@@ -20,7 +20,7 @@
     "@types/form-data": "2.2.1",
     "@types/mocha": "5.2.7",
     "codecov": "3.6.1",
-    "conventional-changelog-cli": "2.0.28",
+    "conventional-changelog-cli": "2.0.31",
     "fetch-mock": "6.5.2",
     "http-server": "0.12.0",
     "istanbul-instrumenter-loader": "3.0.1",