chore(deps-dev): bump lodash from 4.17.20 to 4.17.21

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.20 to 4.17.21.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](lodash/lodash@4.17.20...4.17.21)

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

Author: dependabot[bot]

package-lock.json

@@ -15,7 +15,7 @@
     "node-sass": "^4.14.1",
     "npm-run-all": "^4.1.5",
     "postcss-cli": "^7.1.1",
-    "lodash": ">=4.17.19",
+    "lodash": ">=4.17.21",
     "braces": ">=2.3.1"
   },
   "scripts": {