Bump lodash from 4.17.11 to 4.17.19 in /challenge-api-v5-mock

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.11 to 4.17.19.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](lodash/lodash@4.17.11...4.17.19)

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

challenge-api-v5-mock/package-lock.json

@@ -5,7 +5,7 @@
   "main": "mock-challenge-api.js",
   "dependencies": {
     "http-json-response": "^1.0.1",
-    "lodash": "^4.17.11"
+    "lodash": "^4.17.19"
   },
   "devDependencies": {},
   "scripts": {