chore(deps): update dependency conventional-changelog to v3.1.15

Author: renovate-bot

package-lock.json

@@ -105,7 +105,7 @@
     "clang-format": "1.3.0",
     "commitlint-circle": "1.0.0",
     "concurrently": "5.0.0",
-    "conventional-changelog": "3.1.14",
+    "conventional-changelog": "3.1.15",
     "core-js": "3.4.1",
     "coveralls": "3.0.7",
     "csv-write-stream": "2.0.0",