chore(deps): update dependency conventional-changelog to v3.1.18

Author: renovate-bot

package-lock.json

@@ -113,7 +113,7 @@
     "clang-format": "1.3.0",
     "commitlint-circle": "1.0.0",
     "concurrently": "5.0.2",
-    "conventional-changelog": "3.1.15",
+    "conventional-changelog": "3.1.18",
     "core-js": "3.5.0",
     "coveralls": "3.0.9",
     "csv-write-stream": "2.0.0",