Bump lodash from 3.10.1 to 4.17.13 in /swagger-generator

Bumps [lodash](https://github.com/lodash/lodash) from 3.10.1 to 4.17.13.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](lodash/lodash@3.10.1...4.17.13)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

swagger-generator/package-lock.json

@@ -24,7 +24,7 @@
     "elasticsearch-client-specification": "file:../specification",
     "express": "^4.16.3",
     "js-yaml": "3.8.2",
-    "lodash": "^3.10.1",
+    "lodash": "^4.17.13",
     "swagger-editor-dist": "^3.6.3",
     "swagger-ui-dist": "^3.17.2"
   }