build(deps): [security] bump lodash from 4.17.15 to 4.17.20

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.15 to 4.17.20. **This update includes security fixes.**
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](lodash/lodash@4.17.15...4.17.20)

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

Author: dependabot-preview[bot]

package-lock.json

@@ -72,7 +72,7 @@
     "commander": "4.1.1",
     "fs-extra": "8.1.0",
     "glob": "7.1.6",
-    "lodash": "4.17.15",
+    "lodash": "4.17.20",
     "reflect-metadata": "0.1.13"
   }
 }