Bump lodash from 4.17.19 to 4.17.21

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.19 to 4.17.21.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](lodash/lodash@4.17.19...4.17.21)

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

Author: dependabot-preview[bot]

package-lock.json

@@ -38,7 +38,7 @@
   "dependencies": {
     "basic-auth": "2.0.1",
     "bluebird": "3.7.2",
-    "lodash": "4.17.19",
+    "lodash": "4.17.21",
     "promisify-any": "2.0.1",
     "statuses": "1.5.0",
     "type-is": "1.6.18"