Update dependency cz-conventional-changelog to v3.1.0 (#13)

Co-authored-by: WhiteSource Renovate <[email protected]>

Author: renovate[bot]

package-lock.json

@@ -32,7 +32,7 @@
     "@types/jest": "25.1.1",
     "@types/node": "13.5.2",
     "commitizen": "4.0.3",
-    "cz-conventional-changelog": "3.0.2",
+    "cz-conventional-changelog": "3.1.0",
     "ghooks": "2.0.4",
     "jest": "24.9.0",
     "prettier": "1.19.1",