fix: upgrade commitizen from 4.0.4 to 4.0.5 (#9)

Snyk has created this PR to upgrade commitizen from 4.0.4 to 4.0.5.

See this package in NPM:
https://www.npmjs.com/package/commitizen

See this project in Snyk:
https://app.snyk.io/org/wallace41290/project/0d1ece67-26c4-440e-bf73-1d9186e20726?utm_source=github&utm_medium=upgrade-pr

package.json

@@ -70,7 +70,7 @@
     "@types/jest": "^25.2.2",
     "@types/node": "12.12.37",
     "colors": "^1.3.2",
-    "commitizen": "^4.0.4",
+    "commitizen": "^4.0.5",
     "coveralls": "^3.0.2",
     "cross-env": "^5.2.0",
     "cz-conventional-changelog": "^2.1.0",